Assertion: hydrogen fuel cell | /r/HasProperty | expensive to produce
Facets:
value: extremely
type: DEGREE
Source sentences:
text: Hydrogen fuel cells are relatively expensive to produce, as their designs require rare substances such as platinum as a catalyst, In 2014, Toyota said it would introduce its Toyota Mirai in Japan for less than $70,000 in 2015.
text: Initially, hydrogen fuel cells are extremely expensive to manufacture.