( ( ( ( ( ( The Brookes ) ( was ( ( a ship ) ( weighing ( 320 tons ) ) ) ) ) , ) and ) ( ( by ( ( the law ) ( of 1788 ) ) ) ( it ( was ( seen ( fit ( to ( ( carry ( 454 slaves ) ) ( on board ) ) ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (DT The) (NNPS Brookes)) (VP (VBD was) (NP (NP (DT a) (NN ship)) (VP (VBG weighing) (NP (CD 320) (NNS tons)))))) (, ,) (CC and) (S (PP (IN by) (NP (NP (DT the) (NN law)) (PP (IN of) (NP (CD 1788))))) (NP (PRP it)) (VP (VBD was) (VP (VBN seen) (ADJP (JJ fit) (S (VP (TO to) (VP (VB carry) (NP (JJ 454) (NNS slaves)) (PP (IN on) (NP (NN board)))))))))) (. .)))
The Brookes was a ship weighing 320 tons, and by the law of 1788 it was seen fit to carry 454 slaves on board.
(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))))))) (. .)))