( Also ( , ( ( burning ( of ( ( ( coal , ) and ) ( other ( fossil fuels ) ) ) ) ) ( ( ( releases ( sulfur ( and ( nitrogen compounds ) ) ) ) ( into ( the air ) ) ) . ) ) ) )
(ROOT (S (ADVP (RB Also)) (, ,) (NP (NP (NN burning)) (PP (IN of) (NP (NP (NN coal)) (, ,) (CC and) (NP (JJ other) (JJ fossil) (NNS fuels))))) (VP (VBZ releases) (NP (NN sulfur) (CC and) (NN nitrogen) (NNS compounds)) (PP (IN into) (NP (DT the) (NN air)))) (. .)))
Also, burning of coal, and other fossil fuels releases sulfur and nitrogen compounds into the air.
(ROOT (S (NP (DT The) (NN element) (NN sulfur)) (VP (VBZ is) (VP (VBN released) (PP (IN into) (NP (DT the) (NN atmosphere))) (PP (IN by) (NP (NP (DT the) (NN burning)) (PP (IN of) (NP (JJ fossil) (NNS fuels))))))) (. .)))