(S (S (NP (QP (ADVP (IN At) (JJS least)) (NN 12)) (NNS trees)) (VP (VBD were) (VP (VBN reported) (S (VP (TO to) (VP (VB have) (VP (VBN toppled) (PP (IN during) (BASENP (DT the) (NN storm)))))))))) (PERIOD .))