question: Did M3 influence a film editor and influence a employee of M1 and M2
query: SELECT count(*) WHERE {
  ?x0 a ns:film.editor .
  ?x1 ns:people.person.employment_history/ns:business.employment_tenure.company M1 .
  ?x1 ns:people.person.employment_history/ns:business.employment_tenure.company M2 .
  M3 ns:influence.influence_node.influenced ?x0 .
  M3 ns:influence.influence_node.influenced ?x1
  }