( Indoors ( ( use ( fireplace ( , ( wood ( stove ( , ( kerosene ( or ( propane heaters ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Indoors)) (VP (VBP use) (NP (NN fireplace) (, ,) (NN wood) (NN stove) (, ,) (NN kerosene) (CC or) (NN propane) (NNS heaters))) (. .)))
Indoors use fireplace, wood stove, kerosene or propane heaters.
(ROOT (S (PP (RB Instead) (IN of) (NP (NN wood))) (, ,) (NP (DT some) (NNS fireplaces)) (VP (VBP use) (NP (NN propane))) (. .)))