question: Which cinematographer influenced by M2 , influenced by M3 , and influenced by M4 was employed by M1
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:film.cinematographer .
  ?x0 ns:influence.influence_node.influenced_by M2 .
  ?x0 ns:influence.influence_node.influenced_by M3 .
  ?x0 ns:influence.influence_node.influenced_by M4 .
  ?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M1
  }