Assertion: natural gas | /r/HasProperty | inexpensive
Facets:
value: relatively
type: DEGREE
Source sentences:
text: However, when natural gas is relatively inexpensive (say, under $20 per 1,000 cubic feet), the cost of heating a home projects to be less costly than propane, even with the efficiency difference.
text: Although it was used in other countries, in the United States it wasn't utilized during the first half of the century because petroleum and natural gas were inexpensive and plentiful.