Assertion: cave | /r/HasProperty | photographed by stanley long of vistascreen
Facets:
value: in the late 1950s
type: TEMPORAL
value: to be sold as both souvenirs
type: PURPOSE
Source sentences:
text: In the late 1950s, the caves were photographed by Stanley Long of VistaScreen, to be sold as both souvenirs and as mail-order stereoviews.