With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Laura Linney was in The Savages.
text_B: Leaffishes are small freshwater fishes of the Polycentridae family , from South America .. family. family ( biology ). All of these fishes are highly specialized ambush predators that resemble leaves , down to the point that their swimming style resembles a drifting leaf -LRB- thus the common name leaf fish , which is shared with old world fishes of family Nandidae with a similar lifestyle -RRB- ; when a prey animal - such as an aquatic insect or smaller fish - comes within range , the fish attacks , swallowing the prey potentially within a quarter of a second .. family. family ( biology ). To aid in this lifestyle , all members of the family have large heads , cryptic colors and very large protractile mouths capable of taking prey items nearly as large as they are .. family. family ( biology ). These intriguing behaviors have given the family a niche in the aquarium hobby ; however , none of these species are easy to maintain in aquariums , requiring very clean , soft , acidic water and copious amounts of live foods .. family. family ( biology )
not_related.