synapsed by synapsed_by_via_type_Is_bouton BFO_0000051 some (GO_0042734 that BFO_0000050 some (GO_0045202 that BFO_0000051 some (GO_0061177 that BFO_0000051 some GO_0045211 that BFO_0000050 some ?Y))) Relation between a muscle and a motor neuron that synapses to it via a type Is bouton. Expands to: has_part some ('presynaptic membrane' that part_of some ('synapse' that has_part some ('type Is terminal button' that has_part some 'postsynaptic membrane' that part_of some ?Y)))))