question: Which character was influenced by M1 and was influenced by a producer of M2 and M3
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:fictional_universe.fictional_character .
  ?x0 ns:influence.influence_node.influenced_by ?x1 .
  ?x0 ns:influence.influence_node.influenced_by M1 .
  ?x1 ns:film.producer.film|ns:film.production_company.films M2 .
  ?x1 ns:film.producer.film|ns:film.production_company.films M3
  }