(S (S (BASENP (NNS Witnesses)) (VP (VBP say) (SBAR (S (S (BASENP (DT the) (NN girl)) (VP (VBD was) (VP (VP (VBN pinned) (PP (IN under) (BASENP (DT the) (NN tree)))) (PP (IN for) (NP (QP (ADVP (IN at) (JJS least)) (NN 10)) (NNS minutes)))))) (SBAR (IN before) (S (BASENP (PRP they)) (VP (VBD were) (ADJP (JJ able) (S (VP (TO to) (VP (VB remove) (BASENP (PRP it))))))))))))) (PERIOD .))