Assertion: polyp | /r/CapableOf | extend their tentacles
Facets:
value: at night
type: TEMPORAL
Source sentences:
text: Polyps extend their tentacles, particularly at night, containing coiled stinging nettle-like cells or nematocysts which pierce and poison and firmly hold living prey paralysing or killing them.
text: At night, polyps extend their tentacles to feed.
text: Polyps extend their tentacles, particularly at night, often containing coiled stinging cells (cnidocytes) which pierce, poison and firmly hold living prey paralysing or killing them.