( ( ( For ( example ( when ( you ( ( ( ( ( turn ( on ( your radiator ) ) ) , ) ( despite ( ( the name ) ( ( the room ) ( is ( heated ( by convection ) ) ) ) ) ) ) , ) ( as ( ( the air ) ( is ( heated ( above ( the radiator ) ) ) ) ) ) ) ) ) ) ) ( , ( it expands ) ) ) ( , ( ( ( rises and ) ( the ( cooler ( , ( denser air ) ) ) ) ) ( ( sinks ( ( causing ( a ( convection current ) ) ) ( around ( the room ) ) ) ) . ) ) ) )
(ROOT (S (S (PP (IN For) (NP (NP (NN example)) (SBAR (WHADVP (WRB when)) (S (NP (PRP you)) (VP (VBP turn) (PP (IN on) (NP (PRP$ your) (NN radiator))) (, ,) (PP (IN despite) (NP (NP (DT the) (NN name)) (SBAR (S (NP (DT the) (NN room)) (VP (VBZ is) (VP (VBN heated) (PP (IN by) (NP (NN convection))))))))) (, ,) (SBAR (IN as) (S (NP (DT the) (NN air)) (VP (VBZ is) (VP (VBN heated) (PP (IN above) (NP (DT the) (NN radiator)))))))))))) (, ,) (NP (PRP it)) (VP (VBZ expands))) (, ,) (NP (NP (NNS rises)) (CC and) (NP (DT the) (JJR cooler) (, ,) (JJ denser) (NN air))) (VP (VBZ sinks) (S (VP (VBG causing) (NP (DT a) (NN convection) (NN current)) (PP (IN around) (NP (DT the) (NN room)))))) (. .)))
For example when you turn on your radiator, despite the name the room is heated by convection, as the air is heated above the radiator, it expands, rises and the cooler, denser air sinks causing a convection current around the room.
(ROOT (S (NP (NNS Rises)) (ADVP (RB then)) (VP (ADVP (RB sinks)) (VBZ does) (NP (NP (JJR deeper) (NN material) (NN cause) (NN convection)) (PP (IN in) (NP (DT the) (NN mantle))))) (. .)))