Assertion: volcano's summit | /r/HasProperty | an idea place
Facets:
value: because of air
type: CAUSE
value: because of its high altitude
type: CAUSE
value: for star gazing
type: PURPOSE
value: because of great distance from urban areas
type: CAUSE
value: because of thin
type: CAUSE
value: for watching
type: PURPOSE
value: because of clean
type: CAUSE
Source sentences:
text: Because of its high altitude, thin and clean air, and great distance from urban areas, the summit of Mauna Kea is an idea place for sky watching and star gazing.