( ( ( Some ( Chemistry Everything ) ) ( in ( the universe ) ) ) ( ( is ( ( made up ) ( of ( ( ( chemical compounds ) , ) ( which ( are ( combinations ( of ( atoms ( that ( are ( ( held together ) ( by ( chemical bonds ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT Some) (NNP Chemistry) (NN Everything)) (PP (IN in) (NP (DT the) (NN universe)))) (VP (VBZ is) (VP (VBN made) (PRT (RP up)) (PP (IN of) (NP (NP (NN chemical) (NNS compounds)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBP are) (NP (NP (NNS combinations)) (PP (IN of) (NP (NP (NNS atoms)) (SBAR (WHNP (WDT that)) (S (VP (VBP are) (VP (VBN held) (ADVP (RB together)) (PP (IN by) (NP (NN chemical) (NNS bonds))))))))))))))))) (. .)))
Some Chemistry Everything in the universe is made up of chemical compounds, which are combinations of atoms that are held together by chemical bonds.
(ROOT (S (NP (NP (DT The) (NNS atoms)) (PP (IN of) (NP (DT a) (NN compound)))) (VP (VBP are) (VP (VBN held) (ADVP (RB together)) (PP (IN by) (NP (NN chemical) (NNS bonds))))) (. .)))