( ( Such ( industrial ( fractionating towers ) ) ) ( ( ( are also ) ( used ( in ( ( ( ( ( ( ( ( cryogenic ( air separation ) ) , ) ( producing ( liquid oxygen ) ) ) , ) ( liquid nitrogen ) ) , ) and ) ( high ( purity argon ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Such) (JJ industrial) (NN fractionating) (NNS towers)) (VP (VBP are) (ADVP (RB also)) (VP (VBN used) (PP (IN in) (NP (NP (JJ cryogenic) (NN air) (NN separation)) (, ,) (NP (JJ producing) (JJ liquid) (NN oxygen)) (, ,) (NP (JJ liquid) (NN nitrogen)) (, ,) (CC and) (NP (JJ high) (NN purity) (NNS argon)))))) (. .)))
Such industrial fractionating towers are also used in cryogenic air separation, producing liquid oxygen, liquid nitrogen, and high purity argon.
(ROOT (S (NP (NNP Nitrogen) (, ,) (NNP oxygen) (CC and) (NNP argon)) (VP (VBP are) (NP (NP (DT the) (CD three) (JJS most) (JJ common) (NNS elements)) (PP (IN in) (NP (NP (DT the) (NN air)) (SBAR (S (NP (PRP we)) (VP (VB breathe)))))))) (. .)))