Assertion: swimmer's stroke | /r/HasProperty | breaststroke
Facets:
Source sentences:
text: Individual freestyle events can also be swum using one of the officially regulated strokes (breaststroke, butterfly, or backstroke).
text: In high school, collegiate, and Olympic swimming, there are two undulating strokes (breaststroke, and butterfly stroke,) and two alternating strokes (front crawl and backstroke).