moments of spontaneous creativity and authentic co-operative interaction 
(ROOT (NP (NP (NNS moments)) (PP (IN of) (NP (NP (JJ spontaneous) (NN creativity)) (CC and) (NP (JJ authentic) (JJ co-operative) (NN interaction))))))
(ROOT (NP (NP (NNS )) (PP (IN ) (NP (NP (JJ ) (NN )) (CC ) (NP (JJ ) (JJ ) (NN ))))))