( ( Although ( propane ( is ( ( the ( main ( house 's ) ) ) ( principal ( heat source ) ) ) ) ) ) ( , ( ( the ( ranch family ) ) ( ( burns ( ( ( ( a ( few cords ) ) ( of ( wood ( in ( the ( fireplace ( and ( wood heater ) ) ) ) ) ) ) ) ( each winter ) ) ( to ( save money ) ) ) ) ; ) ) ) )
(ROOT (S (SBAR (IN Although) (S (NP (NN propane)) (VP (VBZ is) (NP (NP (DT the) (JJ main) (NN house) (POS 's)) (JJ principal) (NN heat) (NN source))))) (, ,) (NP (DT the) (NN ranch) (NN family)) (VP (VBZ burns) (NP (NP (DT a) (JJ few) (NNS cords)) (PP (IN of) (NP (NP (NN wood)) (PP (IN in) (NP (DT the) (NN fireplace) (CC and) (NN wood) (NN heater))))) (NP (DT each) (NN winter)) (S (VP (TO to) (VP (VB save) (NP (NN money))))))) (: ;)))
Although propane is the main house's principal heat source, the ranch family burns a few cords of wood in the fireplace and wood heater each winter to save money;
(ROOT (S (PP (RB Instead) (IN of) (NP (NN wood))) (, ,) (NP (DT some) (NNS fireplaces)) (VP (VBP use) (NP (NN propane))) (. .)))