( ( ( ( The ( Last Week ) ) ... ) ( 30 7 ) ) . )
(ROOT (NP (NP (DT The) (JJ Last) (NN Week)) (: ...) (NP (QP (CD 30) (CD 7))) (. .)))
The Last Week ...........................................................30 7.
(ROOT (S (NP (DT The) (JJ fetal) (NN period)) (VP (VBZ lasts) (NP (NP (QP (RB approximately) (CD 30)) (NNS weeks)) (NP (NNS weeks)))) (. .)))