Assertion: mural | /r/HasProperty | the subject of efforts
Facets:
Source sentences:
text: The murals are the subject of efforts by the United States Postal Service to preserve and protect them.
text: Murals still extant are the subject of efforts by the U.S. Postal Service to preserve and protect them.
text: The murals are the subject of efforts by the U.S. Postal Service to preserve and protect them.