( ( Coal ( tar solids ) ) ( ( ( ( residue -LRB- ) ( The combination ) ) ( of ( wastes ( formed ( by ( ( the coking ) ( of ( bituminous ( coal ( tar pitch ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NN Coal) (NN tar) (NNS solids)) (VP (VBZ residue) (-LRB- -LRB-) (NP (DT The) (NN combination)) (PP (IN of) (NP (NP (NNS wastes)) (VP (VBN formed) (PP (IN by) (NP (NP (DT the) (NN coking)) (PP (IN of) (NP (JJ bituminous) (NN coal) (NN tar) (NN pitch))))))))) (. .)))
Coal tar solids residue (The combination of wastes formed by the coking of bituminous coal tar pitch.
(ROOT (S (NP (PRP We)) (VP (VBP call) (NP (NP (DT the) (JJ solid) (NN form)) (PP (IN of) (NP (JJ hydrocarbons) (NN coal))))) (. .)))