( ( ( ( ( volcanic dome ) ( -LRB- ( ( ( ( ( ( viscous magma ) , ) explosive ) , ) dangerous ) -RRB- ) ) ) , ) 3 ) . )
(ROOT (NP (NP (NP (JJ volcanic) (NN dome)) (PRN (-LRB- -LRB-) (NP (JJ viscous) (NN magma)) (, ,) (NP (JJ explosive)) (, ,) (NP (JJ dangerous)) (-RRB- -RRB-)) (, ,)) (ADJP (CD 3)) (. .)))
volcanic dome (viscous magma, explosive, dangerous), 3.
(ROOT (S (NP (NP (DT The) (NN thickness)) (PP (IN of) (NP (NN magma)))) (VP (VBZ determines) (SBAR (IN whether) (S (NP (DT a) (JJ volcanic) (NN eruption)) (VP (MD will) (VP (VB be) (ADJP (JJ explosive))))) (CC or) (RB not))) (. .)))