(S (S (SBAR (WHADVP (WRB When)) (S (BASENP (NNP Parkersburg)) (VP (VBD was) (VP (VP (VBN hit) (PP (IN by) (BASENP (DT a) (NN tornado)))) (PP (IN in) (NP (BASENP (DT the) (NN summer)) (PP (IN of) (BASENP (NN 2008))))))))) (S (BASENP (NNP Thomas)) (VP (VBD worked) (S (VP (ADVP (RB endlessly)) (VP (TO to) (VP (VB restore) (BASENP (DT the) (VBN damaged) (NN football) (NN field))))))))) (PERIOD .))