Assertion: powered wheelchair | /r/HasProperty | invented by george klein
Facets:
value: to assist injured veterans
type: PURPOSE
Source sentences:
text: The electric-powered wheelchair was invented by George Klein who worked for the National Research Council of Canada, to assist injured veterans after World War II.
text: The electric powered wheelchair was said to be invented by George Klein who worked for the National Research Council of Canada, to assist injured veterans during World War II.