Assertion: nebula's gas | /r/HasProperty | expelled by star
Facets:
value: through a series of eruptive events
type: MANNER
Source sentences:
text: New research by astrophysicists reveals how the gas and energy expelled by stars are returned to the universe, and in what forms.
text: The blue gas was ejected by the star through a series of eruptive events during which it lost part of its outer envelope of material.