question: Did M4 and M6 influence M5 and influence a employee of M0 , M1 , M2 , and M3
query: SELECT count(*) WHERE {
  ?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M0 .
  ?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M1 .
  ?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M2 .
  ?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M3 .
  M4 ns:influence.influence_node.influenced ?x0 .
  M4 ns:influence.influence_node.influenced M5 .
  M6 ns:influence.influence_node.influenced ?x0 .
  M6 ns:influence.influence_node.influenced M5
  }