Assertion: water polo | /r/HasProperty | adopted as a championship sport
Facets:
value: for men in the collegiate system
type: TRANSITIVE-OBJECT
value: in the early 70’s
type: TEMPORAL
Source sentences:
text: Water polo within the United States was adopted as a championship sport for men in the collegiate system in the early 70’s, while women were added about 30 years later as participation grew.