My cousin's.
( ( My cousin ) ( 's . ) )
(ROOT (S (NP (PRP$ My) (NN cousin)) (VP (VBZ 's)) (. .)))
My cousin is over there.
( ( My cousin ) ( ( is ( over there ) ) . ) )
(ROOT (S (NP (PRP$ My) (NN cousin)) (VP (VBZ is) (PP (IN over) (NP (RB there)))) (. .)))