Today it is the effects of pollution that are taking their toll on Agra's monuments.
( Today ( it ( ( is ( ( ( the effects ) ( of pollution ) ) ( that ( are ( ( taking ( their toll ) ) ( on ( ( Agra 's ) monuments ) ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (NN Today)) (NP (PRP it)) (VP (VBZ is) (NP (NP (DT the) (NNS effects)) (PP (IN of) (NP (NN pollution))) (SBAR (WHNP (WDT that)) (S (VP (VBP are) (VP (VBG taking) (NP (PRP$ their) (NN toll)) (PP (IN on) (NP (NP (NNP Agra) (POS 's)) (NNS monuments))))))))) (. .)))
Agra's monuments are being damaged by pollution.
( ( ( Agra 's ) monuments ) ( ( are ( being ( damaged ( by pollution ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP Agra) (POS 's)) (NNS monuments)) (VP (VBP are) (VP (VBG being) (VP (VBN damaged) (PP (IN by) (NP (NN pollution)))))) (. .)))