Were M1 and M5 executive produced by M2 , M3 , and M4 and written by a sibling of M0 's founder and employee
SELECT count(*) WHERE {
?x0 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 ?x1 .
?x1 ns:organization.organization_founder.organizations_founded M0 .
?x1 ns:people.person.employment_history/ns:business.employment_tenure.company M0 .
FILTER ( ?x0 != ?x1 ) .
M1 ns:film.film.executive_produced_by M2 .
M1 ns:film.film.executive_produced_by M3 .
M1 ns:film.film.executive_produced_by M4 .
M1 ns:film.film.written_by ?x0 .
M5 ns:film.film.executive_produced_by M2 .
M5 ns:film.film.executive_produced_by M3 .
M5 ns:film.film.executive_produced_by M4 .
M5 ns:film.film.written_by ?x0
}