Assertion: pope's duty | /r/HasProperty | issued by pope leo xiii
Facets:
value: on 15 may
type: TEMPORAL
Source sentences:
text: Rerum novarum (from its incipit, with the direct translation of the Latin meaning "of revolutionary change"[n 1]), or Rights and Duties of Capital and Labor, is an encyclical issued by Pope Leo XIII on 15 May 1891.