/usr/lib/libakonadi-calendar.so.4 is in libakonadi-calendar4 4:4.14.10-1ubuntu7.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/libakonadi-calendar.so.4.14.38
/usr/lib/libakonadi-calendar.so.4.14.38