question: Was a production company whose employee was employed by M2 and M3 and founded M4 , M5 , and M6 a company
query: SELECT count(*) WHERE {
  ?x0 a ns:business.employer .
  ?x0 a ns:film.production_company .
  ?x0 ns:business.employer.employees/ns:business.employment_tenure.person ?x1 .
  ?x1 ns:organization.organization_founder.organizations_founded M4 .
  ?x1 ns:organization.organization_founder.organizations_founded M5 .
  ?x1 ns:organization.organization_founder.organizations_founded M6 .
  ?x1 ns:people.person.employment_history/ns:business.employment_tenure.company M2 .
  ?x1 ns:people.person.employment_history/ns:business.employment_tenure.company M3
  }