This movement, we know today, is caused by a wobble in the earth's rotation on its axis.
(we; know; T:today; is caused by a wobble in the earth's rotation on its axis; T:This movement) Context(we know,List([15, 22))):(This movement; is caused; by a wobble in the earth's rotation on its axis)
we know,List([15, 22))
we This movement
know is caused
T:today is caused by a wobble in the earth's rotation on its axis T:This movement
by a wobble in the earth's rotation on its axis