( ( ( quadruplet ( ( A group ) ( of ( four notes ) ) ) ) ( to ( be ( played ( in ( ( the time ) ( of 3 ) ) ) ) ) ) ) . )
(ROOT (S (VP (VB quadruplet) (NP (NP (DT A) (NN group)) (PP (IN of) (NP (CD four) (NNS notes)))) (S (VP (TO to) (VP (VB be) (VP (VBN played) (PP (IN in) (NP (NP (DT the) (NN time)) (PP (IN of) (NP (CD 3)))))))))) (. .)))
quadruplet A group of four notes to be played in the time of 3.
(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)))) (. .)))