a matter of plumbing arrangements and mind games 
(ROOT (NP (NP (DT a) (NN matter)) (PP (IN of) (NP (NP (NN plumbing) (NNS arrangements)) (CC and) (NP (NN mind) (NNS games))))))
(ROOT (NP (NP (DT ) (NN )) (PP (IN ) (NP (NP (NN ) (NNS )) (CC ) (NP (NN ) (NNS ))))))