code: def _assemble_gef(self, stmt):
          
          gef = deepcopy(stmt.gef)
          gef.activity = ActivityCondition('gef', True)
          ras = deepcopy(stmt.ras)
          ras.activity = ActivityCondition('gtpbound', True)
          self._add_nodes_edges(gef, ras, pc.DIRECTLY_INCREASES, stmt.evidence)
docs: Example: act(p(HGNC:SOS1), ma(gef)) => act(p(HGNC:KRAS), ma(gtp))