Were M3 and M4 founded by a person that executive produced M2 and founded by a film producer
SELECT count(*) WHERE {
?x0 a ns:film.producer .
?x1 a ns:people.person .
?x1 ns:film.producer.films_executive_produced M2 .
M3 ns:organization.organization.founders ?x0 .
M3 ns:organization.organization.founders ?x1 .
M4 ns:organization.organization.founders ?x0 .
M4 ns:organization.organization.founders ?x1
}