/usr/share/php/arc/store/ is in libarc-php 2~20101006-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/php/arc/store/ARC2_MemStore.php
/usr/share/php/arc/store/ARC2_RemoteStore.php
/usr/share/php/arc/store/ARC2_Store.php
/usr/share/php/arc/store/ARC2_StoreAskQueryHandler.php
/usr/share/php/arc/store/ARC2_StoreAtomLoader.php
/usr/share/php/arc/store/ARC2_StoreCBJSONLoader.php
/usr/share/php/arc/store/ARC2_StoreConstructQueryHandler.php
/usr/share/php/arc/store/ARC2_StoreDeleteQueryHandler.php
/usr/share/php/arc/store/ARC2_StoreDescribeQueryHandler.php
/usr/share/php/arc/store/ARC2_StoreDumpQueryHandler.php
/usr/share/php/arc/store/ARC2_StoreDumper.php
/usr/share/php/arc/store/ARC2_StoreEndpoint.php
/usr/share/php/arc/store/ARC2_StoreHelper.php
/usr/share/php/arc/store/ARC2_StoreInsertQueryHandler.php
/usr/share/php/arc/store/ARC2_StoreLoadQueryHandler.php
/usr/share/php/arc/store/ARC2_StoreQueryHandler.php
/usr/share/php/arc/store/ARC2_StoreRDFXMLLoader.php
/usr/share/php/arc/store/ARC2_StoreRSSLoader.php
/usr/share/php/arc/store/ARC2_StoreSGAJSONLoader.php
/usr/share/php/arc/store/ARC2_StoreSPOGLoader.php
/usr/share/php/arc/store/ARC2_StoreSelectQueryHandler.php
/usr/share/php/arc/store/ARC2_StoreSemHTMLLoader.php
/usr/share/php/arc/store/ARC2_StoreTableManager.php
/usr/share/php/arc/store/ARC2_StoreTurtleLoader.php