( ( Unit ( ( conversions and ) ( dimensional analysis ) ) ) . )
(ROOT (NP (NP (NNP Unit)) (NP (NP (NNS conversions)) (CC and) (NP (JJ dimensional) (NN analysis))) (. .)))
Unit conversions and dimensional analysis.
(ROOT (S (NP (JJ Dimensional) (NN analysis)) (VP (VBZ is) (VP (VBN used) (S (VP (TO to) (VP (VB carry) (PRT (RP out)) (NP (JJ metric) (NN unit) (NNS conversions))))))) (. .)))