/usr/include/ is in libdee-dev 1.0.10-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/dee-1.0/
/usr/include/dee-1.0/dee.h
/usr/include/dee-1.0/dee-analyzer.h
/usr/include/dee-1.0/dee-file-resource-manager.h
/usr/include/dee-1.0/dee-filter-model.h
/usr/include/dee-1.0/dee-filter.h
/usr/include/dee-1.0/dee-hash-index.h
/usr/include/dee-1.0/dee-index.h
/usr/include/dee-1.0/dee-model.h
/usr/include/dee-1.0/dee-model-reader.h
/usr/include/dee-1.0/dee-peer.h
/usr/include/dee-1.0/dee-server.h
/usr/include/dee-1.0/dee-client.h
/usr/include/dee-1.0/dee-proxy-model.h
/usr/include/dee-1.0/dee-resource-manager.h
/usr/include/dee-1.0/dee-result-set.h
/usr/include/dee-1.0/dee-sequence-model.h
/usr/include/dee-1.0/dee-serializable.h
/usr/include/dee-1.0/dee-serializable-model.h
/usr/include/dee-1.0/dee-shared-model.h
/usr/include/dee-1.0/dee-term-list.h
/usr/include/dee-1.0/dee-text-analyzer.h
/usr/include/dee-1.0/dee-transaction.h
/usr/include/dee-1.0/dee-tree-index.h
/usr/include/dee-1.0/dee-icu.h