( ( ( ( A ( ( very large ) river ) ) , ) Mahanadi ) ( ( ( crosses ( ( ( this plain ) and ) ( its ( big ( delta merges ) ) ) ) ) ( into ( ( the deltas ) ( formed ( bythe ( ( Brahmini and ) Baitarani ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT A) (ADJP (RB very) (JJ large)) (NN river)) (, ,) (NP (NNP Mahanadi))) (VP (VBZ crosses) (NP (NP (DT this) (NN plain)) (CC and) (NP (PRP$ its) (JJ big) (NN delta) (NNS merges))) (PP (IN into) (NP (NP (DT the) (NNS deltas)) (VP (VBN formed) (S (VP (VB bythe) (NP (NNP Brahmini) (CC and) (NNP Baitarani)))))))) (. .)))
A very large river, Mahanadi crosses this plain and its big delta merges into the deltas formed bythe Brahmini and Baitarani.
(ROOT (S (NP (NNP Delta)) (VP (VBZ is) (NP (NP (DT a) (NN triangular) (NN feature)) (SBAR (WHNP (WDT that)) (S (VP (VBZ is) (VP (VBN formed) (SBAR (WHADVP (WRB when)) (S (NP (DT a) (NN river)) (VP (VBZ empties) (PP (IN into) (NP (NP (DT a) (JJ large) (NN body)) (PP (IN of) (NP (RB still) (NN water)))))))))))))) (. .)))