Assertion: foramen magnum | /r/HasProperty | positioned toward the rear of the head
Facets:
value: to keep its eyes
type: PURPOSE
Source sentences:
text: This bipedal adaptation allows the head to balance atop of the neck; while contrastingly, a four-legged ape has its foramen magnum positioned toward the rear of the head to keep its eyes facing forward (and not down) when it moves.