/usr/ is in libsocialweb-client-dev 0.25.20-6+b1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/
/usr/include/libsocialweb/
/usr/include/libsocialweb/libsocialweb-client/
/usr/include/libsocialweb/libsocialweb-client/libsocialweb-client-hack-for-vala.h
/usr/include/libsocialweb/libsocialweb-client/sw-client-contact-view.h
/usr/include/libsocialweb/libsocialweb-client/sw-client-item-view.h
/usr/include/libsocialweb/libsocialweb-client/sw-client-lastfm.h
/usr/include/libsocialweb/libsocialweb-client/sw-client-service.h
/usr/include/libsocialweb/libsocialweb-client/sw-client.h
/usr/include/libsocialweb/libsocialweb-client/sw-contact.h
/usr/include/libsocialweb/libsocialweb-client/sw-item.h
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/libsocialweb-client.pc
/usr/share/
/usr/share/doc/
/usr/share/doc/libsocialweb-client-dev/
/usr/share/doc/libsocialweb-client-dev/AUTHORS
/usr/share/doc/libsocialweb-client-dev/README.gz
/usr/share/doc/libsocialweb-client-dev/TODO
/usr/share/doc/libsocialweb-client-dev/changelog.Debian.amd64.gz
/usr/share/doc/libsocialweb-client-dev/changelog.Debian.gz
/usr/share/doc/libsocialweb-client-dev/changelog.gz
/usr/share/doc/libsocialweb-client-dev/copyright
/usr/share/gir-1.0/
/usr/share/gir-1.0/SocialWebClient-0.25.gir
/usr/share/vala/
/usr/share/vala/vapi/
/usr/share/vala/vapi/libsocialweb-client.deps
/usr/share/vala/vapi/libsocialweb-client.vapi
/usr/lib/x86_64-linux-gnu/libsocialweb-client.so