( this ( ( means ( it ( takes ( ( ( more fuel ) ( -LRB- ( ( ( volume and ) mass ) -RRB- ) ) ) ( to ( produce ( ( the ( same amount ) ) ( of work ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT this)) (VP (VBZ means) (SBAR (S (NP (PRP it)) (VP (VBZ takes) (S (NP (NP (JJR more) (NN fuel)) (PRN (-LRB- -LRB-) (NP (NP (NN volume)) (CC and) (NP (NN mass))) (-RRB- -RRB-))) (VP (TO to) (VP (VB produce) (NP (NP (DT the) (JJ same) (NN amount)) (PP (IN of) (NP (NN work))))))))))) (. .)))
this means it takes more fuel (volume and mass) to produce the same amount of work.
(ROOT (S (NP (DT The) (NN term) (NN volume)) (VP (VBZ means) (SBAR (S (NP (NP (DT the) (NN amount)) (PP (IN of) (NP (NN space) (NN matter)))) (VP (VBZ takes) (PRT (RP up)))))) (. .)))