(S (S (BASENP (DT The) (NNS workers)) (VP (VBP are) (VP (VP (VBG taking) (BASENP (JJ unofficial) (NN action))) (PP (IN in) (NP (BASENP (NN support)) (PP (IN of) (NP (BASENP (DT a) (ADJP (NN three) (NN day)) (NN strike)) (PP (IN at) (NP (BASENP (NNP Lindsey) (NNP Oil) (NNP Refinery)) (PP (IN in) (NP (BASENP (NNP Lincolnshire)) (COMMA ,) (BASENP (NNP England))))))))))))) (PERIOD .))