Assertion: roller skate | /r/HasProperty | seen on the stage
Facets:
value: in 1743
type: TEMPORAL
value: for the first time in london
type: TEMPORAL
Source sentences:
text: Initially, the roller skates were seen on the stage for the first time in London in 1743 and then the first patented roller skate was invented by Belgian inventor John Joseph Merlin and its present form was devised in 2000 by Joseph Colonese.