Then an examination of fossil remains revealed forms of plants and animals which no longer existed, and natural scientist began looking for an explanation.
(forms of plants and animals; existed; T:no longer) (natural scientist; began; looking for an explanation) Context(natural scientist began,List([104, 127))):(natural scientist; began looking; for an explanation)
natural scientist began,List([104, 127))
forms of plants and animals natural scientist natural scientist
existed began began looking
T:no longer
looking for an explanation
for an explanation