Assertion: terrestrial planet's material | /r/CapableOf | sink to the center
Facets:
value: in early formation
type: TEMPORAL
Source sentences:
text: They were once molten, which allowed their structures to differentiate (that is, their denser materials sank to the center).
text: Every planet began its existence in an entirely fluid state; in early formation, the denser, heavier materials sank to the centre, leaving the lighter materials near the surface.
text: Another source for the heat: dense materials such as iron and nickel that sunk to the center, warming up due to friction.