( A ( ( guy ( who ( raises ( ( goosebumps ( but not ) ) records ) ) ) ) . ) )
(ROOT (NP (DT A) (NN guy) (SBAR (WHNP (WP who)) (S (VP (VBZ raises) (NP (NP (NNS goosebumps)) (CONJP (CC but) (RB not)) (NP (NNS records)))))) (. .)))
A guy who raises goosebumps but not records.
(ROOT (S (NP (NNS Goosebumps)) (VP (VBP happen) (PRN (-LRB- -LRB-) (VB s) (-RRB- -RRB-)) (SBAR (WHADVP (WRB when)) (S (NP (NNS mammals)) (VP (VB raise) (NP (PRP$ their) (NN hair)) (PP (IN with) (NP (NP (JJ tiny) (NNS muscles)) (PP (IN in) (NP (DT the) (NN skin))))))))) (. .)))
Goosebumps happen(s) when mammals raise their hair with tiny muscles in the skin.