Assertion: sketch | /r/CreatedBy | the master
Facets:
value: sometimes
type: TEMPORAL
value: for works
type: CAUSE
Source sentences:
text: Such a sketch is often intended for the artist’s own guidance; but sometimes, in the context of a bottega (studio-shop) type of production, in which an artist would employ many assistants, sketches were made by the master for works to be completed by others.