( ( PHYSICS ( Archimedes ( Law ( Archimedes Law ) ) ) ) ( ( is incorrect ) . ) )
(ROOT (S (NP (NNP PHYSICS) (NNP Archimedes) (NNP Law) (NNP Archimedes) (NNP Law)) (VP (VBZ is) (ADJP (JJ incorrect))) (. .)))
PHYSICS Archimedes Law Archimedes Law is incorrect.
(ROOT (S (NP (NP (NNP Archimedes) (POS ')) (NN law)) (VP (VBZ explains) (NP (SBAR (WHADVP (WRB why)) (S (NP (DT some) (NNS objects)) (VP (VBP float)))) (CC and) (NP (DT some) (NN sink))))))