Assertion: pedestrian crossing | /r/ObjectUse | used at 1,000 sites
Facets:
value: in its original form
type: OTHER
value: after isolated experiments
type: TEMPORAL
value: in 1949
type: TEMPORAL
value: in the united kingdom
type: LOCATION
Source sentences:
text: After isolated experiments, the zebra crossing was first used at 1,000 sites in the United Kingdom in 1949 in its original form of alternating strips of blue and yellow.