/usr/lib/qt4/examples/linguist/ is in qt4-demos 4:4.8.7+dfsg-5ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/qt4/examples/linguist/README
/usr/lib/qt4/examples/linguist/arrowpad/
/usr/lib/qt4/examples/linguist/arrowpad/arrowpad
/usr/lib/qt4/examples/linguist/arrowpad/arrowpad.cpp
/usr/lib/qt4/examples/linguist/arrowpad/arrowpad.h
/usr/lib/qt4/examples/linguist/arrowpad/arrowpad.pro
/usr/lib/qt4/examples/linguist/arrowpad/main.cpp
/usr/lib/qt4/examples/linguist/arrowpad/mainwindow.cpp
/usr/lib/qt4/examples/linguist/arrowpad/mainwindow.h
/usr/lib/qt4/examples/linguist/hellotr/
/usr/lib/qt4/examples/linguist/hellotr/hellotr
/usr/lib/qt4/examples/linguist/hellotr/hellotr.pro
/usr/lib/qt4/examples/linguist/hellotr/main.cpp
/usr/lib/qt4/examples/linguist/linguist.pro
/usr/lib/qt4/examples/linguist/trollprint/
/usr/lib/qt4/examples/linguist/trollprint/main.cpp
/usr/lib/qt4/examples/linguist/trollprint/mainwindow.cpp
/usr/lib/qt4/examples/linguist/trollprint/mainwindow.h
/usr/lib/qt4/examples/linguist/trollprint/printpanel.cpp
/usr/lib/qt4/examples/linguist/trollprint/printpanel.h
/usr/lib/qt4/examples/linguist/trollprint/trollprint
/usr/lib/qt4/examples/linguist/trollprint/trollprint.pro
/usr/lib/qt4/examples/linguist/trollprint/trollprint_pt.ts