/usr/ is in libpreludedb-dev 4.1.0-1.
This file is owned by root:root, with mode 0o755.
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/usr/include/
/usr/include/libpreludedb/
/usr/include/libpreludedb/preludedb-error.h
/usr/include/libpreludedb/preludedb-error.hxx
/usr/include/libpreludedb/preludedb-path-selection.h
/usr/include/libpreludedb/preludedb-plugin-format.h
/usr/include/libpreludedb/preludedb-plugin-sql.h
/usr/include/libpreludedb/preludedb-sql-select.h
/usr/include/libpreludedb/preludedb-sql-settings.h
/usr/include/libpreludedb/preludedb-sql.h
/usr/include/libpreludedb/preludedb-sql.hxx
/usr/include/libpreludedb/preludedb-version.h
/usr/include/libpreludedb/preludedb.h
/usr/include/libpreludedb/preludedb.hxx
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/libpreludedb/
/usr/lib/x86_64-linux-gnu/libpreludedb/bin/
/usr/lib/x86_64-linux-gnu/libpreludedb/bin/libpreludedb-config
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/libpreludedb.pc
/usr/share/
/usr/share/doc/
/usr/share/doc/libpreludedb-dev/
/usr/share/doc/libpreludedb-dev/copyright
/usr/lib/x86_64-linux-gnu/libpreludedb.so
/usr/lib/x86_64-linux-gnu/libpreludedbcpp.so
/usr/share/doc/libpreludedb-dev/changelog.Debian.gz