<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def get_statements(self, filter=False):
 """Return the combined list of statements from BEL and Pathway Commons. Internally calls :py:meth:`get_biopax_stmts` and :py:meth:`get_bel_stmts`. Parameters filter : bool If True, includes only those statements that exclusively mention genes in :py:attr:`gene_list`. Default is False. Returns ------- list of :py:class:`indra.statements.Statement` List of INDRA statements extracted the BEL large corpus and Pathway Commons. """

        bp_stmts = self.get_biopax_stmts(filter=filter)
        bel_stmts = self.get_bel_stmts(filter=filter)

        return bp_stmts + bel_stmts