Assertion: steam engine's steam | /r/AtLocation | boiler
Facets:
Source sentences:
text: The steam to power a steam engine is made in a boiler that heats water to make steam.
text: The steam to power a steam engine is made in a boiler that heats water to make steam.
text: Fuel is burn in the tray at the bottom, steam is made in boiler which works the piston (the blue part), which turns the wheel