(S (S (NP (EX There)) (VP (VBP have) (VP (VBN been) (NP (NNS concerns) (SBAR (IN that) (S (NP (BASENP (DT an) (NN attempt)) (PP (IN at) (BASENP (NN impeachment)))) (VP (MD would) (VP (VB result) (PP (IN in) (NP (BASENP (DT a) (JJ detrimental) (JJ political) (NN battle)) (PP (IN in) (NP (BASENP (DT a) (NN country)) (VP (ADVP (RB already)) (VP (VBG facing) (BASENP (JJ political) (NN instability)))))))))))))))) (PERIOD .))