Assertion: sunspot | /r/HasProperty | observed on the surface of the sun
Facets:
value: for thousands of years
type: TEMPORAL
value: throughout 2008
type: TEMPORAL
Source sentences:
text: Only a few sunspots were observed on the surface of the Sun throughout 2008.
text: Sunspots have been observed on the surface of the Sun for thousands of years beginning with the meticulous records kept by ancient Chinese observers.