Assertion: breaststroke's arm | /r/HasProperty | held for example
Facets:
value: adolph kiefer
type: OTHER
value: during the underwater push phase
type: TEMPORAL
value: previously
type: TEMPORAL
Source sentences:
text: Previously, the arms were held straight during the underwater push phase, for example by the top backstroke swimmer from 1935 to 1945, Adolph Kiefer.