( ( Emissions ( of ( ( sulfur dioxide ) ( ( ( ( to ( the atmosphere ) ) , ) primarily ) ( from ( fossil-fuel burning ) ) ) ) ) ) ( , ( probably ( ( ( exceed ( ( the emissions ) ( of ( gaseous sulfur ) ) ) ) ( from ( ( land and ) oceans ) ) ) ; ) ) ) )
(ROOT (S (NP (NP (NNS Emissions)) (PP (IN of) (NP (NP (NN sulfur) (NN dioxide)) (PP (PP (TO to) (NP (DT the) (NN atmosphere))) (, ,) (RB primarily) (PP (IN from) (NP (JJ fossil-fuel) (NN burning))))))) (, ,) (ADVP (RB probably)) (VP (VBP exceed) (NP (NP (DT the) (NNS emissions)) (PP (IN of) (NP (JJ gaseous) (NN sulfur)))) (PP (IN from) (NP (NN land) (CC and) (NNS oceans)))) (: ;)))
Emissions of sulfur dioxide to the atmosphere, primarily from fossil-fuel burning, probably exceed the emissions of gaseous sulfur from land and oceans;
(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))))))) (. .)))