( ( A solvent ) ( ( is ( ( the liquid ) ( in ( ( a solution ) ( that ( dissolves ( ( the substance ) ( in ( the solution ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT A) (NN solvent)) (VP (VBZ is) (NP (NP (DT the) (NN liquid)) (PP (IN in) (NP (NP (DT a) (NN solution)) (SBAR (WHNP (WDT that)) (S (VP (VBZ dissolves) (NP (NP (DT the) (NN substance)) (PP (IN in) (NP (DT the) (NN solution))))))))))) (. .)))
A solvent is the liquid in a solution that dissolves the substance in the solution.
(ROOT (S (NP (DT A) (NN solution)) (VP (VBZ forms) (SBAR (WHADVP (WRB when)) (S (NP (DT a) (NN solute)) (VP (VBZ dissolves) (PP (IN in) (NP (DT a) (JJ solvent))))))) (. .)))