question: Which film producer employed M1 and was founded by a male sibling of M2
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:film.producer .
  ?x0 ns:business.employer.employees/ns:business.employment_tenure.person M1 .
  ?x0 ns:organization.organization.founders ?x1 .
  ?x1 ns:people.person.gender ns:m.05zppz .
  ?x1 ns:people.person.sibling_s/ns:people.sibling_relationship.sibling|ns:fictional_universe.fictional_character.siblings/ns:fictional_universe.sibling_relationship_of_fictional_characters.siblings M2 .
  FILTER ( ?x1 != M2 )
  }