question: Was a French character influenced by M1 and influenced by M2 and M3
query: SELECT count(*) WHERE {
  ?x0 a ns:fictional_universe.fictional_character .
  ?x0 ns:influence.influence_node.influenced_by M1 .
  ?x0 ns:influence.influence_node.influenced_by M2 .
  ?x0 ns:influence.influence_node.influenced_by M3 .
  ?x0 ns:people.person.nationality ns:m.0f8l9c
  }