(S (S (S (BASENP (PRP He)) (VP (VP (VBD came) (PP (IN from) (NP (DT a) (NP (ADJP (JJ poor) (COMMA ,) (JJ agricultural)) (NN background))))) (CC and) (VP (VP (VBD left) (BASENP (NN school))) (ADVP (RB early))))) (CONJP (COMMA ,) (CC but)) (S (BASENP (PRP it)) (VP (VP (VBD was) (PP (IN during) (BASENP (PRPD his) (NNS schooldays)))) (SBAR (S (BASENP (PRP he)) (VP (VBD joined) (POS 's))))))) (PERIOD .))