Assertion: cave | /r/AtLocation | use
Facets:
value: since the iron age
type: TEMPORAL
value: incidently
type: MANNER
value: throughout prehistory
type: TEMPORAL
Source sentences:
text: Cave paintings and artifacts indicate that the caves were in use throughout prehistory over a long period during the Middle and Later Stone Ages .
text: Incidently the cave has been in use since the Iron Age (archaeological dig, 1931-32).