Bees and ants are programmed to behave as they do, birds build nests and make annual migrations by instinct, salmon and eels follow an inbuilt instinct when they migrate to spawn;
(Bees and ants; to behave; T:as they do; nests) (they; migrate; to spawn) Context(they migrate,List([157, 169))):(they; migrate to spawn to spawn; ) (they; do; ) (birds; make; annual migrations)
they migrate,List([157, 169))
Bees and ants they they they birds
to behave migrate migrate to spawn to spawn do make
T:as they do nests
to spawn
annual migrations