Assertion: train | /r/CapableOf | gain monolithic railcar
Facets:
value: in 1972
type: TEMPORAL
Source sentences:
text: In 1972, 4.5-volt trains gained a monolithic railcar that carried the batteries and contained both a bottom-mounted stop button to be actuated by signals, as well as a side-mounted lever for manual go/stop/back control and tripping by a track-side pivot.