/usr/share/gtk-doc/ is in entangle 0.7.2-1ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/gtk-doc/html/
/usr/share/gtk-doc/html/Entangle/
/usr/share/gtk-doc/html/Entangle/Entangle-entangle-debug.html
/usr/share/gtk-doc/html/Entangle/Entangle-entangle-dpms.html
/usr/share/gtk-doc/html/Entangle/Entangle-entangle-pixbuf.html
/usr/share/gtk-doc/html/Entangle/Entangle.devhelp2
/usr/share/gtk-doc/html/Entangle/EntangleApplication.html
/usr/share/gtk-doc/html/Entangle/EntangleCamera.html
/usr/share/gtk-doc/html/Entangle/EntangleCameraFile.html
/usr/share/gtk-doc/html/Entangle/EntangleCameraList.html
/usr/share/gtk-doc/html/Entangle/EntangleCameraManager.html
/usr/share/gtk-doc/html/Entangle/EntangleCameraPicker.html
/usr/share/gtk-doc/html/Entangle/EntangleCameraSupport.html
/usr/share/gtk-doc/html/Entangle/EntangleColourProfileTransform.html
/usr/share/gtk-doc/html/Entangle/EntangleControl.html
/usr/share/gtk-doc/html/Entangle/EntangleControlButton.html
/usr/share/gtk-doc/html/Entangle/EntangleControlChoice.html
/usr/share/gtk-doc/html/Entangle/EntangleControlDate.html
/usr/share/gtk-doc/html/Entangle/EntangleControlGroup.html
/usr/share/gtk-doc/html/Entangle/EntangleControlPanel.html
/usr/share/gtk-doc/html/Entangle/EntangleControlRange.html
/usr/share/gtk-doc/html/Entangle/EntangleControlText.html
/usr/share/gtk-doc/html/Entangle/EntangleControlToggle.html
/usr/share/gtk-doc/html/Entangle/EntangleDeviceManager.html
/usr/share/gtk-doc/html/Entangle/EntangleHelpAbout.html
/usr/share/gtk-doc/html/Entangle/EntangleImage.html
/usr/share/gtk-doc/html/Entangle/EntangleImageDisplay.html
/usr/share/gtk-doc/html/Entangle/EntangleImageHistogram.html
/usr/share/gtk-doc/html/Entangle/EntangleImageLoader.html
/usr/share/gtk-doc/html/Entangle/EntangleMediaPopup.html
/usr/share/gtk-doc/html/Entangle/EntangleMediaStatusbar.html
/usr/share/gtk-doc/html/Entangle/EntanglePixbufLoader.html
/usr/share/gtk-doc/html/Entangle/EntanglePreferences.html
/usr/share/gtk-doc/html/Entangle/EntanglePreferencesDisplay.html
/usr/share/gtk-doc/html/Entangle/EntangleProgress.html
/usr/share/gtk-doc/html/Entangle/EntangleSession.html
/usr/share/gtk-doc/html/Entangle/EntangleSessionBrowser.html
/usr/share/gtk-doc/html/Entangle/EntangleThumbnailLoader.html
/usr/share/gtk-doc/html/Entangle/annotation-glossary.html
/usr/share/gtk-doc/html/Entangle/api-index-full.html
/usr/share/gtk-doc/html/Entangle/ch01.html
/usr/share/gtk-doc/html/Entangle/ch02.html
/usr/share/gtk-doc/html/Entangle/home.png
/usr/share/gtk-doc/html/Entangle/index.html
/usr/share/gtk-doc/html/Entangle/left-insensitive.png
/usr/share/gtk-doc/html/Entangle/left.png
/usr/share/gtk-doc/html/Entangle/object-tree.html
/usr/share/gtk-doc/html/Entangle/right-insensitive.png
/usr/share/gtk-doc/html/Entangle/right.png
/usr/share/gtk-doc/html/Entangle/style.css
/usr/share/gtk-doc/html/Entangle/up-insensitive.png
/usr/share/gtk-doc/html/Entangle/up.png