( ( Holiday ( response time ) ) ( ( may ( be ( several hours ) ) ) . ) )
(ROOT (S (NP (NNP Holiday) (NN response) (NN time)) (VP (MD may) (VP (VB be) (NP (JJ several) (NNS hours)))) (. .)))
Holiday response time may be several hours.
(ROOT (S (NP (NNS Bacteria)) (VP (MD may) (VP (VB divide) (NP (NP (QP (JJ several) (NNS times))) (NP (DT an) (NN hour))))) (. .)))