Was M0 a Swedish person that influenced M2 , M3 , and M4
SELECT count(*) WHERE {
M0 a ns:people.person .
M0 ns:influence.influence_node.influenced M2 .
M0 ns:influence.influence_node.influenced M3 .
M0 ns:influence.influence_node.influenced M4 .
M0 ns:people.person.nationality ns:m.0d0vqn
}