/usr/lib/x86_64-linux-gnu/ada/ is in libopentoken5-dev 6.0b-4.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/ada/adalib/
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/ada_lexer.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/html_lexer-basic.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/html_lexer-tags.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/html_lexer-task_safe.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/html_lexer-task_unsafe.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/html_lexer.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/java_lexer.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/m3_lexer.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-production-list-print.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-production-list.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-production-parser-lalr-generator.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-production-parser-lalr-parser.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-production-parser-lalr-parser_lists.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-production-parser-lalr.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-production-parser-lrk_item.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-production-parser.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-production-print.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-production.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-recognizer-based_integer.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-recognizer-based_integer_ada_style.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-recognizer-based_integer_java_style.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-recognizer-based_integer_real_ada.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-recognizer-based_real_ada_style.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-recognizer-bracketed_comment.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-recognizer-character_set.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-recognizer-csv_field.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-recognizer-end_of_file.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-recognizer-escape_sequence.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-recognizer-extended_digits.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-recognizer-graphic_character.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-recognizer-html_entity.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-recognizer-identifier.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-recognizer-integer.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-recognizer-keyword.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-recognizer-line_comment.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-recognizer-nothing.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-recognizer-octal_escape.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-recognizer-real.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-recognizer-separator.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-recognizer-string.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-recognizer.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-text_feeder-counted_gnat_os_lib.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-text_feeder-string.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-text_feeder-text_io.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-text_feeder.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-token-enumerated-analyzer.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-token-enumerated-identifier.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-token-enumerated-integer.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-token-enumerated-list.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-token-enumerated-nonterminal.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-token-enumerated-real.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-token-enumerated-string.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-token-enumerated.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-token-linked_list.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-token-list.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-token-list_mixin.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-token-selection.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-token-selection_mixin.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-token-sequence.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-token-sequence_mixin.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken-token.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/opentoken.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/opentoken/run_ada_lexer.ali