For example, &#145;biologists tell us that on the inter-tidal rocks along the coast of Washington state, starfish are a keystone species.
(biologists; tell; us; that on the inter-tidal rocks along the coast of Washington state, starfish are a keystone species) Context(biologists tell,List([19, 34))):(starfish; are; a keystone species; L:on the inter-tidal rocks along the coast of Washington state)
biologists tell,List([19, 34))
biologists starfish
tell are
us that on the inter-tidal rocks along the coast of Washington state, starfish are a keystone species
a keystone species L:on the inter-tidal rocks along the coast of Washington state