It may be that the Earth's mantle shifted, imbalancing the planet and causing it to tilt on its axis.
(the Earth's mantle; imbalancing; the planet) (It; may be; that the Earth's mantle shifted) Context(It may be,List([0, 9))):(the Earth's mantle; shifted; ) (the Earth's mantle; causing; it to tilt on its axis) Context(the Earth 's mantle causing,List([15, 77))):(it; to tilt; on its axis)
It may be,List([0, 9)) the Earth 's mantle causing,List([15, 77))
the Earth's mantle It the Earth's mantle the Earth's mantle it
imbalancing may be shifted causing to tilt
the planet
that the Earth's mantle shifted
it to tilt on its axis
on its axis