(S (S (BASENP (DT The) (NNPS Canadians)) (VP (VBD were) (VP (VBG mentoring) (NP (BASENP (DT some) (JJ new) (JJ Afghan) (NNS recruits)) (COMMA ,) (SBAR (WHNP (WP who)) (S (VP (VBD were) (PP (IN under) (BASENP (JJ British) (NN command)))))))))) (PERIOD .))