finding an interesting shell on the beach ( Looks like Mom's shiny necklace. 
( ( ( finding ( an ( interesting shell ) ) ) ( on ( ( the beach ) ( -LRB- ( Looks ( like ( ( Mom 's ) ( shiny necklace ) ) ) ) ) ) ) ) . )
(ROOT (S (VP (VBG finding) (NP (DT an) (JJ interesting) (NN shell)) (PP (IN on) (NP (NP (DT the) (NN beach)) (SBAR (S (-LRB- -LRB-) (NP (NNP Looks)) (VP (VBP like) (NP (NP (NN Mom) (POS 's)) (JJ shiny) (NN necklace)))))))) (. .)))
That shell looks like Mom's necklace she got at the art fair.
( ( That shell ) ( ( looks ( like ( ( ( Mom 's ) necklace ) ( she ( got ( at ( the ( art fair ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT That) (NN shell)) (VP (VBZ looks) (PP (IN like) (NP (NP (NP (NN Mom) (POS 's)) (NN necklace)) (SBAR (S (NP (PRP she)) (VP (VBD got) (PP (IN at) (NP (DT the) (NN art) (NN fair))))))))) (. .)))