( ( A ship ) ( ( ( floats ( by ( ( the ( same laws ) ) ( of ( specific ( ( gravity and ) equilibrium ) ) ) ) ) ) ( as ( ( a tree ) ( ( ( uprooted ( by ( the wind ) ) ) and ) ( blown ( into ( the water ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT A) (NN ship)) (VP (VBZ floats) (PP (IN by) (NP (NP (DT the) (JJ same) (NNS laws)) (PP (IN of) (NP (JJ specific) (NN gravity) (CC and) (NN equilibrium))))) (SBAR (IN as) (S (NP (DT a) (NN tree)) (VP (VP (VBD uprooted) (PP (IN by) (NP (DT the) (NN wind)))) (CC and) (VP (VBN blown) (PP (IN into) (NP (DT the) (NN water)))))))) (. .)))
A ship floats by the same laws of specific gravity and equilibrium as a tree uprooted by the wind and blown into the water.
(ROOT (S (NP (NP (NNP Archimedes) (POS ')) (NN law)) (VP (VBZ explains) (SBAR (WHADVP (WRB why)) (S (NP (NP (DT a) (NN ship)) (VP (VBG weighing) (NP (NP (NNS thousands)) (PP (IN of) (NP (JJ metric) (NNS tons)))))) (VP (VBZ floats) (PP (IN on) (NP (NN water))))))) (. .)))