Assertion: natural gas's amount | /r/HasProperty | released
Facets:
value: from the
type: OTHER
Source sentences:
text: Large amounts of methane are released from the ...
text: While these substances are present as very small trace impurities, enough coal is burned that significant amounts of these substances are released.
text: While these substances are present as very small trace impurities, enough coal is burned that significant amounts of these substances are released.