/usr/include/GNUstep/ is in libaddressview-dev 0.4.8-2+b2.
This file is owned by root:root, with mode 0o755.
..
/usr/include/GNUstep/AddressView
/usr/include/GNUstep/Frameworks/
/usr/include/GNUstep/Frameworks/AddressView.framework/
/usr/include/GNUstep/Frameworks/AddressView.framework/Headers
/usr/include/GNUstep/Frameworks/AddressView.framework/Versions/
/usr/include/GNUstep/Frameworks/AddressView.framework/Versions/0/
/usr/include/GNUstep/Frameworks/AddressView.framework/Versions/0/ADImageView.h
/usr/include/GNUstep/Frameworks/AddressView.framework/Versions/0/ADPersonPropertyView.h
/usr/include/GNUstep/Frameworks/AddressView.framework/Versions/0/ADPersonView.h
/usr/include/GNUstep/Frameworks/AddressView.framework/Versions/0/ADSinglePropertyView.h
/usr/include/GNUstep/Frameworks/AddressView.framework/Versions/0/AddressView.h