Were M2 and M6 founded by M3 and M4 , founded by M5 , and founded by M1 's British parent
SELECT count(*) WHERE {
?x0 ns:people.person.children|ns:fictional_universe.fictional_character.children|ns:organization.organization.child/ns:organization.organization_relationship.child M1 .
?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
}