( They ( ( ( should also ) ( ( be ( somewhat skilled ) ) ( in ( ( ( unit conversions ) and ) ( dimensional analysis ) ) ) ) ) . ) )
(ROOT (S (NP (PRP They)) (VP (MD should) (ADVP (RB also)) (VP (VB be) (ADJP (RB somewhat) (JJ skilled)) (PP (IN in) (NP (NP (NN unit) (NNS conversions)) (CC and) (NP (JJ dimensional) (NN analysis)))))) (. .)))
They should also be somewhat skilled in 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))))))) (. .)))