A principal feature of his gravitational theory was that the force which caused objects to fall to the earth was the same force which kept the planets in their orbits.
(the same force; kept; the planets; in their orbits) (A principal feature of his gravitational theory; was; that the force which caused objects to fall to the earth was the same force) Context(A principal feature of his gravitational theory was,List([0, 51))):(the force which caused objects to fall to the earth; was; the same force which kept the planets in their orbits) (the force; caused; objects to fall to the earth) Context(the force caused,List([57, 79))):(objects; to fall; to the earth)
A principal feature of his gravitational theory was,List([0, 51)) the force caused,List([57, 79))
the same force A principal feature of his gravitational theory the force which caused objects to fall to the earth the force objects
kept was was caused to fall
the planets in their orbits
that the force which caused objects to fall to the earth was the same force
the same force which kept the planets in their orbits
objects to fall to the earth
to the earth