A few weeks' later, UCLA scientists confirmed the two rocks were meteorites.
(UCLA scientists; confirmed; the two rocks were meteorites; T:A few weeks' later) Context(UCLA scientists confirmed,List([20, 45))):(the two rocks; were; meteorites)
UCLA scientists confirmed,List([20, 45))
UCLA scientists the two rocks
confirmed were
the two rocks were meteorites T:A few weeks' later
meteorites