( ( To ( pay ( for ( his drink ) ) ) ) ( , ( he ( ( ( crushes ( carbon ( from ( a pencil ) ) ) ) ( into diamonds ) ) . ) ) ) )
(ROOT (S (S (VP (TO To) (VP (VB pay) (PP (IN for) (NP (PRP$ his) (NN drink)))))) (, ,) (NP (PRP he)) (VP (VBZ crushes) (NP (NP (NN carbon)) (PP (IN from) (NP (DT a) (NN pencil)))) (PP (IN into) (NP (NNS diamonds)))) (. .)))
To pay for his drink, he crushes carbon from a pencil into diamonds.
(ROOT (S (SBAR (IN Although) (S (NP (PRP they)) (VP (VBP differ) (ADVP (RB vastly)) (PP (IN in) (NP (NNS hardness)))))) (, ,) (NP (NP (NN pencil) (NN lead)) (CC and) (NP (NNS diamonds))) (DT both) (VP (VBP contain) (NP (NN carbon))) (. .)))