question: Did a actor that M2 and M3 were executive produced by influence M1
query: SELECT count(*) WHERE {
  ?x0 a ns:film.actor .
  ?x0 ns:film.producer.films_executive_produced M2 .
  ?x0 ns:film.producer.films_executive_produced M3 .
  ?x0 ns:influence.influence_node.influenced M1
  }