Assertion: steam engine's efficiency | /r/HasProperty | improved by samuel groase
Facets:
value: subsequently
type: TEMPORAL
value: further
type: DEGREE
Source sentences:
text: Efficiency was further improved by Samuel Groase, who insulated the boiler, engine, and pipes.
text: The efficiency of Cornish Steam Engines was subsequently improved by William Sims, Arthur Woolf, and Samuel Groase.