The scientists chose to search for fossils on the island of Madagascar because it separated as an island so long ago.
(it; separated; as an island; T:so long ago) (The scientists; chose; to search for fossils on the island of Madagascar) Context(The scientists chose,List([0, 20))):(The scientists; chose to search; for fossils on the island of Madagascar)
The scientists chose,List([0, 20))
it The scientists The scientists
separated chose chose to search
as an island T:so long ago
to search for fossils on the island of Madagascar
for fossils on the island of Madagascar