/usr/ is in libqt4-declarative-folderlistmodel 4:4.8.7+dfsg-7ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/doc/
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/qt4/
/usr/lib/x86_64-linux-gnu/qt4/imports/
/usr/lib/x86_64-linux-gnu/qt4/imports/Qt/
/usr/lib/x86_64-linux-gnu/qt4/imports/Qt/labs/
/usr/lib/x86_64-linux-gnu/qt4/imports/Qt/labs/folderlistmodel/
/usr/lib/x86_64-linux-gnu/qt4/imports/Qt/labs/folderlistmodel/libqmlfolderlistmodelplugin.so
/usr/lib/x86_64-linux-gnu/qt4/imports/Qt/labs/folderlistmodel/qmldir
/usr/share/doc/libqt4-declarative-folderlistmodel/
/usr/share/doc/libqt4-declarative-folderlistmodel/copyright
/usr/share/doc/libqt4-declarative-folderlistmodel/LGPL_EXCEPTION.txt
/usr/share/doc/libqt4-declarative-folderlistmodel/changelog.Debian.gz