( ( ( 9.3.2 ( Balancing mechanisms ) ) ( In general ) ) ( , ( ( all mechanisms ) ( ( should ( be ( ( balanced ( except perhaps ) ) ( for ( small masses ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (NP (CD 9.3.2) (NNP Balancing) (NNS mechanisms)) (IN In) (NP (NN general))) (, ,) (NP (DT all) (NNS mechanisms)) (VP (MD should) (VP (VB be) (VP (VBN balanced) (PP (IN except) (ADVP (RB perhaps))) (PP (IN for) (NP (JJ small) (NNS masses)))))) (. .)))
9.3.2 Balancing mechanisms In general, all mechanisms should be balanced except perhaps for small masses.
(ROOT (S (NP (DT A) (NN student)) (VP (MD should) (VP (VB use) (NP (DT a) (NN balance) (S (VP (TO to) (VP (VB compare) (NP (NP (DT the) (NNS masses)) (PP (IN of) (NP (CD two) (JJ small) (NNS rocks)))))))))) (. .)))