( ( ( Standing ( ( waves and ) interference ) ) ( in waves ) ) . )
(ROOT (S (VP (VBG Standing) (NP (NNS waves) (CC and) (NN interference)) (PP (IN in) (NP (NNS waves)))) (. .)))
Standing waves and interference in waves.
(ROOT (S (NP (JJ Constructive) (NN interference)) (VP (VBZ is) (SBAR (WHADVP (WRB when)) (S (NP (CD two) (NNS waves)) (VP (VBP combine) (S (VP (TO to) (VP (VB create) (NP (DT a) (JJR larger) (NN wave))))))))) (. .)))