( ( Being ( ( a mixture ) ( of ( ( ( monolithic metals ) and ) ( composite materials ) ) ) ) ) ( , ( FMLs ( ( belong ( to ( ( ( the class ) ( of ( heterogeneous mixtures ) ) ) ( -LRB- ( ( see below ) -RRB- ) ) ) ) ) . ) ) ) )
(ROOT (S (S (VP (VBG Being) (NP (NP (DT a) (NN mixture)) (PP (IN of) (NP (NP (JJ monolithic) (NNS metals)) (CC and) (NP (JJ composite) (NNS materials))))))) (, ,) (NP (NNP FMLs)) (VP (VBP belong) (PP (TO to) (NP (NP (DT the) (NN class)) (PP (IN of) (NP (JJ heterogeneous) (NNS mixtures))) (PRN (-LRB- -LRB-) (S (VP (VB see) (ADVP (RB below)))) (-RRB- -RRB-))))) (. .)))
Being a mixture of monolithic metals and composite materials, FMLs belong to the class of heterogeneous mixtures (see below).
(ROOT (S (NP (NNS Heterogeneous)) (VP (VBZ is) (NP (NP (DT the) (NN term)) (PP (IN for) (NP (NP (DT a) (NN mixture)) (SBAR (WHNP (WDT that)) (S (VP (VBZ varies) (PP (IN in) (NP (PRP$ its) (NN composition)))))))))) (. .)))