Assertion: hoist's trolley | /r/HasProperty | metal and features wheels
Facets:
value: usually
type: TEMPORAL
Source sentences:
text: The hoist equipment needed for such a set-up includes the track itself, which is usually a heavy metal mounted high above the ground; the trolley, which is also usually metal and features wheels designed to work in conjunction with the track; and mounting hardware to ensure all elements are stable for use.