(S (S (S (BASENP (JJ Numerous) (NN mud) (NNS slides)) (VP (VBD were) (VP (VBN reported) (PP (ADVP (DT all)) (PP (IN across) (NP (BASENP (NNP Minnesota)) (COMMA ,) (NP (BASENP (DT an) (NN area)) (VP (VBN believed) (S (VP (TO to) (VP (VB be) (PP (IN among) (BASENP (DT the) (ADJP (RBS hardest) (VBN hit)) (NNS areas)))))))))))))) (PP (VBG according) (PP (TO to) (BASENP (NNS meteorologists))))) (PERIOD .))