code: def p_contextualize_sentence(self, t):
          
  
          if len(t) == 5:
              t[0] = contextualize(t[3], line=t.lineno(1))
          else:
              t[0] = contextualize(t[4], t[2], line=t.lineno(1))
docs: contextualize_sentence : CONTEXTUALIZE LPAREN contextualize_items RPAREN
                                    | CONTEXTUALIZE NUMBER LPAREN contextualize_items RPAREN