Environmentalists had argued that the removal of the trees would damage the ecosystem.
(Environmentalists; had argued; that the removal of the trees would damage the ecosystem) Context(Environmentalists had argued,List([0, 28))):(the removal of the trees; would damage; the ecosystem)
Environmentalists had argued,List([0, 28))
Environmentalists the removal of the trees
had argued would damage
that the removal of the trees would damage the ecosystem
the ecosystem