Assertion: engine's design | /r/HasProperty | attractive
Facets:
value: in development projects
type: LOCATION
value: economically
type: DEGREE
Source sentences:
text: Solar powered Stirling engines are increasingly popular as they offer an environmentally sound option for producing power while some designs are economically attractive in development projects.
text: Even though it has a short temper at certain times the design is so attractive you wouldn't trade it in for a more reliable Ricky Lake type engine.