It was discovered in 1906 that the Earth has a dense central core, made largely of fluid, and it was soon agreed that this core is rich in iron, a good electrical conductor.
(a dense central core; made; largely of fluid) (it; was agreed; that this core is rich in iron; T:soon) Context(it was agreed,List([94, 112))):(this core; is; rich in iron)
it was agreed,List([94, 112))
a dense central core it this core
made was agreed is
largely of fluid
that this core is rich in iron T:soon
rich in iron