Assertion: retractable seat belt | /r/HasProperty | introduced in early 1950s
Facets:
value: as a way
type: MANNER
value: by a neurologist
type: OTHER
Source sentences:
text: Retractable seat belts in automobiles were first introduced in the early 1950s by a neurologist, Dr. C. Hunter Shelden, as a way to prevent people suffering from auto accident-related head trauma.