Assertion: ethane | /r/HasProperty | separated in most well-developed gas fields
Facets:
Source sentences:
text: Today, ethane is an important petrochemical feedstock and is separated from the other components of natural gas in most well-developed gas fields.
text: Today, however, ethane is an important petrochemical feedstock, and it is separated from the other components of natural gas in most well-developed gas fields.