( ( Propane fireplaces ) ( ( ( ( ( burn ( more efficiently ) ) ( than ( wood-burning models ) ) ) and ) ( ( ( distribute heat ) ( more evenly ) ) ( throughout ( the room ) ) ) ) . ) )
(ROOT (S (NP (JJ Propane) (NNS fireplaces)) (VP (VP (VBP burn) (ADVP (RBR more) (RB efficiently)) (PP (IN than) (NP (JJ wood-burning) (NNS models)))) (CC and) (VP (VBP distribute) (NP (NN heat)) (ADVP (RBR more) (RB evenly)) (PP (IN throughout) (NP (DT the) (NN room))))) (. .)))
Propane fireplaces burn more efficiently than wood-burning models and distribute heat more evenly throughout the room.
(ROOT (S (PP (RB Instead) (IN of) (NP (NN wood))) (, ,) (NP (DT some) (NNS fireplaces)) (VP (VBP use) (NP (NN propane))) (. .)))