question: Did M5 employ M6 and employ a film editor that M1 , M2 , M3 , and M4 influenced
query: SELECT count(*) WHERE {
  ?x0 a ns:film.editor .
  ?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:influence.influence_node.influenced_by M4 .
  M5 ns:business.employer.employees/ns:business.employment_tenure.person ?x0 .
  M5 ns:business.employer.employees/ns:business.employment_tenure.person M6
  }