He discovered the laws of falling bodies by rolling balls down an inclined plane (avi movie) .
(He; discovered; the laws of falling bodies) Context(He discovered,List([0, 13))):(He; discovered the laws of falling bodies by rolling; balls; down an inclined plane)
He discovered,List([0, 13))
He He
discovered discovered the laws of falling bodies by rolling
the laws of falling bodies
balls down an inclined plane