/usr/lib/ is in libkf5kaddressbookgrantlee-dev 4:17.12.3-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/cmake/
/usr/lib/x86_64-linux-gnu/cmake/KF5KaddressbookGrantlee/
/usr/lib/x86_64-linux-gnu/cmake/KF5KaddressbookGrantlee/KF5KaddressbookGrantleeConfig.cmake
/usr/lib/x86_64-linux-gnu/cmake/KF5KaddressbookGrantlee/KF5KaddressbookGrantleeConfigVersion.cmake
/usr/lib/x86_64-linux-gnu/cmake/KF5KaddressbookGrantlee/KF5KaddressbookGrantleeTargets-debian.cmake
/usr/lib/x86_64-linux-gnu/cmake/KF5KaddressbookGrantlee/KF5KaddressbookGrantleeTargets.cmake
/usr/lib/x86_64-linux-gnu/qt5/
/usr/lib/x86_64-linux-gnu/qt5/mkspecs/
/usr/lib/x86_64-linux-gnu/qt5/mkspecs/modules/
/usr/lib/x86_64-linux-gnu/qt5/mkspecs/modules/qt_KaddressbookGrantlee.pri
/usr/lib/x86_64-linux-gnu/libKF5KaddressbookGrantlee.so