Were M2 and M6 founded by M3 , founded by M4 and M5 , and founded by a British film producer
SELECT count(*) WHERE {
?x0 a ns:film.producer .
?x0 ns:people.person.nationality ns:m.07ssc .
M2 ns:organization.organization.founders ?x0 .
M2 ns:organization.organization.founders M3 .
M2 ns:organization.organization.founders M4 .
M2 ns:organization.organization.founders M5 .
M6 ns:organization.organization.founders ?x0 .
M6 ns:organization.organization.founders M3 .
M6 ns:organization.organization.founders M4 .
M6 ns:organization.organization.founders M5
}