Assertion: mountain ash's fruit | /r/CapableOf | open on one side
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Source sentences:
text: While its taxonomy is somewhat contentious, the family is usually divided into four subfamilies based primarily on fruit type: Amygdaloideae, with drupes (fleshy stone fruits); Maloideae, with pomes (fruits in which the floral hypanthium becomes fleshy); Rosoideae, with achenes (dry fruits that do not open) or drupelets (small, aggregated drupes); and Spiraeoideae, with follicles (dry fruits that open on one side).