(S (S (BASENP (DT The) (NN swap)) (VP (ADVP (RB reportedly)) (VP (VP (VBD began) (BASENP (JJ late) (NN yesterday))) (COMMA ,) (PP (IN with) (S (BASENP (NNP Russia)) (VP (VBG beginning) (NP (BASENP (DT the) (NN process)) (PP (IN of) (S (VP (VP (VBG releasing) (NP (NP (BASENP (QP (ADVP (IN at) (JJS least)) (NN one))) (PP (IN of) (NP (BASENP (DT the) (NNS prisoners)) (SBAR (S (BASENP (PRP they)) (VP (VBD held))))))) (PRN (COMMA ,) (BASENP (NNP Igor) (NNP Sutyagin)) (COMMA ,)))) (ADVP (RB almost) (RB immediately)))))))))))) (PERIOD .))