Assertion: purple martin | /r/HasProperty | progne subis
Facets:
Source sentences:
text: In America the name refers to the purple martin (Progne subis) and its four tropical relatives
text: The purple martin (Progne subis) is the largest swallow in North America.
text: Purple Martin (Progne subis).
text: The Purple Martin (Progne subis) is the largest North American swallow.
text: Probably breeds above the lower (coastal) areas occupied by Gray-breasted Martin (Progne chalybea), but below the elevations where Purple Martin (Progne subis) breeds (Phillips 1986).