Because the Moon produces tides on the Earth, and these tides cause water and rock to move about on the surface of the Earth.
(the Moon; produces; tides on the Earth) (these tides; cause; water and rock to move about on the surface of the Earth) Context(these tides cause,List([50, 67))):(water and rock; to move; about; L:on the surface of the Earth)
these tides cause,List([50, 67))
the Moon these tides water and rock
produces cause to move
tides on the Earth
water and rock to move about on the surface of the Earth
about L:on the surface of the Earth