( ( The ( formal ( rush period ) ) ) ( ( ( ( lasts ( ( ( approximately ( a week ) ) and ) ( a half ) ) ) and ) ( concludes ( with ( bid day ) ) ) ) . ) )
(ROOT (S (NP (DT The) (JJ formal) (NN rush) (NN period)) (VP (VP (VBZ lasts) (NP (NP (RB approximately) (DT a) (NN week)) (CC and) (NP (DT a) (NN half)))) (CC and) (VP (VBZ concludes) (PP (IN with) (NP (NN bid) (NN day))))) (. .)))
The formal rush period lasts approximately a week and a half and concludes with bid day.
(ROOT (S (NP (DT The) (JJ fetal) (NN period)) (VP (VBZ lasts) (NP (NP (QP (RB approximately) (CD 30)) (NNS weeks)) (NP (NNS weeks)))) (. .)))