know the band or the album 's songs by heart 
(ROOT (S (VP (VB know) (NP (NP (DT the) (NN band)) (CC or) (NP (NP (DT the) (NN album) (POS 's)) (NNS songs))) (PP (IN by) (NP (NN heart))))))
(ROOT (S (VP (VB ) (NP (NP (DT ) (NN )) (CC ) (NP (NP (DT ) (NN ) (POS )) (NNS ))) (PP (IN ) (NP (NN ))))))