Assertion: steam engine's efficiency | /r/HasProperty | improved by arthur woolf
Facets:
value: subsequently
type: TEMPORAL
Source sentences:
text: The efficiency of the engines was improved by engineers including James Watt, who added a separate condenser; Jonathan Hornblower and Arthur Woolf, who compounded the cylinders; and William McNaught, who devised a method of compounding an existing engine.
text: The efficiency of Cornish Steam Engines was subsequently improved by William Sims, Arthur Woolf, and Samuel Groase.