question: Was a female person that influenced M1 employed by M2 and employed by M3 and M4
query: SELECT count(*) WHERE {
  ?x0 a ns:people.person .
  ?x0 ns:influence.influence_node.influenced 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 .
  ?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M4 .
  ?x0 ns:people.person.gender ns:m.02zsn
  }