It was an adaptation that would help tree-living primates survive.
(It; was; an adaptation that would help tree-living primates survive) (an adaptation; would help; tree-living primates survive) Context(an adaptation would help,List([7, 36))):(tree-living primates; survive; )
an adaptation would help,List([7, 36))
It an adaptation tree-living primates
was would help survive
an adaptation that would help tree-living primates survive
tree-living primates survive