(S (S (BASENP (DT An) (JJ Islamic) (JJ militant) (NN web) (NN forum)) (VP (VBZ has) (VP (VBN released) (NP (BASENP (DT a) (NN videotape)) (PP (IN of) (NP (NP (NP (BASENP (NNP Al-Qaeda) (POS 's)) (NP (BASENP (NN second)) (PP (IN in) (BASENP (NN command))))) (PRN (COMMA ,) (BASENP (NNP Ayman) (NNP al-Zawahiri)) (COMMA ,))) (SBAR (WHNP (WP who)) (S (VP (ADVP (RB reportedly)) (VP (VP (VBD released) (BASENP (DT the) (NN tape))) (S (VP (TO to) (VP (VB commemorate) (NP (NP (BASENP (DT the) (NN battle)) (PP (IN of) (BASENP (NNP Tora) (NNP Bora)))) (PP (IN in) (BASENP (NNP December) (NN 2001))))))))))))))))) (PERIOD .))