Were M2 and M4 founded by M3 and founded by a British child of M1
SELECT count(*) WHERE {
?x0 ns:people.person.nationality ns:m.07ssc .
?x0 ns:people.person.parents|ns:fictional_universe.fictional_character.parents|ns:organization.organization.parent/ns:organization.organization_relationship.parent M1 .
M2 ns:organization.organization.founders ?x0 .
M2 ns:organization.organization.founders M3 .
M4 ns:organization.organization.founders ?x0 .
M4 ns:organization.organization.founders M3
}