Assertion: peak's elevation | /r/HasProperty | reached on mount everest
Facets:
value: by the british
type: OTHER
value: in the 1920s
type: TEMPORAL
Source sentences:
text: (However, higher non-summit elevations had already been reached by the British on Mount Everest in the 1920s, and it is possible that George Mallory reached Everest's summit in 1924.)