reacting to it - feeling a part of its grand locations , thinking urgently as the protagonists struggled 
(ROOT (S (VP (VBG reacting) (PP (IN to) (NP (PRP it))) (, -) (S (VP (VBG feeling) (NP (NP (DT a) (NN part)) (PP (IN of) (NP (PRP$ its) (JJ grand) (NNS locations)))))) (, ,) (S (VP (VBG thinking) (ADVP (RB urgently)) (SBAR (IN as) (S (NP (DT the) (NNS protagonists)) (VP (VBD struggled)))))))))
(ROOT (S (VP (VBG ) (PP (IN ) (NP (PRP ))) (, ) (S (VP (VBG ) (NP (NP (DT ) (NN )) (PP (IN ) (NP (PRP$ ) (JJ ) (NNS )))))) (, ) (S (VP (VBG ) (ADVP (RB )) (SBAR (IN ) (S (NP (DT ) (NNS )) (VP (VBD )))))))))