( ( ( ( ( ( Basic Laws ) ( of ( ( Physics Apply ) ( ( A law ) ( of physics ) ) ) ) ) , ) ( known ( as ( Archimedes principal ) ) ) ) , ) ( ( is ( responsible ( for ( whether ( ( a ( drowning victim ) ) ( ( floats or ) sinks ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP Basic) (NNP Laws)) (PP (IN of) (NP (NP (NNP Physics) (NNP Apply)) (NP (NP (DT A) (NN law)) (PP (IN of) (NP (NN physics)))))) (, ,) (VP (VBN known) (PP (IN as) (NP (NNP Archimedes) (NN principal)))) (, ,)) (VP (VBZ is) (ADJP (JJ responsible) (PP (IN for) (SBAR (IN whether) (S (NP (DT a) (VBG drowning) (NN victim)) (VP (VP (VBZ floats)) (CC or) (VP (VBZ sinks)))))))) (. .)))
Basic Laws of Physics Apply A law of physics, known as Archimedes principal, is responsible for whether a drowning victim floats or sinks.
(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))))))