( Cellular ( ( respiration ( that ( ( proceeds ( without oxygen ) ) ( is ( called ( anaerobic respiration ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Cellular)) (VP (VBP respiration) (SBAR (IN that) (S (NP (NP (NNS proceeds)) (PP (IN without) (NP (NN oxygen)))) (VP (VBZ is) (VP (VBN called) (NP (JJ anaerobic) (NN respiration))))))) (. .)))
Cellular respiration that proceeds without oxygen is called anaerobic respiration.
(ROOT (S (NP (PRP You)) (VP (VBP call) (NP (NP (JJ cellular) (NN respiration)) (SBAR (WHNP (WDT that)) (S (VP (VBZ does) (RB not) (VP (VB need) (NP (NN oxygen)) (S (VP (TO to) (VP (VB proceed) (NP (JJ anaerobic) (NN respiration))))))))))) (. .)))