( ( The quadruplets ) ( ( ( spent ( four weeks ) ) ( in ( intensive care ) ) ) . ) )
(ROOT (S (NP (DT The) (NNS quadruplets)) (VP (VBD spent) (NP (CD four) (NNS weeks)) (PP (IN in) (NP (JJ intensive) (NN care)))) (. .)))
The quadruplets spent four weeks in intensive care.
(ROOT (S (NP (NP (CD Four) (NNS children)) (VP (VBN born) (PP (IN at) (NP (CD one) (NN birth))))) (VP (VBP are) (VP (VBN called) (NP (NNS quadruplets)))) (. .)))