Assertion: backstroke | /r/HasProperty | swum
Facets:
value: with arms
type: MANNER
value: until 1914
type: TEMPORAL
value: with a breaststroke leg kick
type: MANNER
Source sentences:
text: Nobody really knows how the backstroke came into being; it was only introduced into competitions in 1906 and was swum with one synchronised backward rotation of both arms with a breaststroke leg kick until 1914.
text: Backstroke is swum with arms out to the side of the body, meaning a swimmer cannot pull directly under their body, resulting in not reaching full potential power.