That is, businesses commonly contract out any function that can be done by another firm at a lower cost.
( ( That is ) ( , ( ( businesses ( commonly ( ( contract out ) ( ( any function ) ( that ( can ( be ( done ( by ( ( another firm ) ( at ( a ( lower cost ) ) ) ) ) ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (INTJ (DT That) (VBZ is)) (, ,) (S (NP (NNS businesses)) (ADVP (RB commonly)) (VP (VB contract) (PRT (RP out)) (NP (NP (DT any) (NN function)) (SBAR (WHNP (WDT that)) (S (VP (MD can) (VP (VB be) (VP (VBN done) (PP (IN by) (NP (NP (DT another) (NN firm)) (PP (IN at) (NP (DT a) (JJR lower) (NN cost))))))))))))) (. .)))
Businesses always perform business functions internally.
( Businesses ( always ( ( ( perform ( business functions ) ) internally ) . ) ) )
(ROOT (S (NP (NNS Businesses)) (ADVP (RB always)) (VP (VBP perform) (NP (NN business) (NNS functions)) (ADVP (RB internally))) (. .)))