question: Were M4 and M5 produced by a Swedish person influenced by M1 and M2
query: SELECT count(*) WHERE {
  ?x0 a ns:people.person .
  ?x0 ns:influence.influence_node.influenced_by M1 .
  ?x0 ns:influence.influence_node.influenced_by M2 .
  ?x0 ns:people.person.nationality ns:m.0d0vqn .
  M4 ns:film.film.produced_by|ns:film.film.production_companies ?x0 .
  M5 ns:film.film.produced_by|ns:film.film.production_companies ?x0
  }