(S (S (S (BASENP (DT A) (NN cleanup) (NN effort)) (VP (VBZ is) (ADJP (JJ underway)))) (PP (IN after) (S (NP (BASENP (JJ torrential) (NNS downpours)) (PP (IN on) (NP (BASENP (NNP Friday)) (COMMA ,) (BASENP (NNP September) (NN 4))))) (VP (VP (VBD caused) (BASENP (JJ significant) (NN flooding))) (PP (IN in) (NP (BASENP (DT the) (NN north-east)) (PP (IN of) (BASENP (NNP Scotland))))))))) (PERIOD .))