Assertion: crampon's crampon | /r/HasProperty | developed in early 1900s
Facets:
value: by oscar eckenstein
type: OTHER
Source sentences:
text: Modern CRAMPONS were developed in the early 1900s by Oscar Eckenstein, an English rock climber and mountaineer.
text: Modern CRAMPONS were developed in the early 1900s by Oscar Eckenstein, an English rock climber and mountaineer.