question: Was a screenwriter that influenced M1 and was influenced by a film editor M2 's employee
query: SELECT count(*) WHERE {
  ?x0 a ns:film.writer .
  ?x0 ns:influence.influence_node.influenced M1 .
  ?x0 ns:influence.influence_node.influenced_by ?x1 .
  ?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M2 .
  ?x1 a ns:film.editor
  }