(S (S (BASENP (DT The) (NN commander)) (VP (ADVP (RB also)) (VP (VBD noted) (SBAR (IN that) (S (BASENP (PRPD his) (NN unit)) (VP (VBD found) (NP (BASENP (DT a) (NN backpack)) (PP (VBG belonging) (PP (TO to) (NP (BASENP (NN one)) (PP (IN of) (BASENP (DT the) (NNS gunmen))))))))))))) (PERIOD .))