Were M1 and M4 founded by a company 's child 's founder and founded by M2 and M3
SELECT count(*) WHERE {
?x0 ns:organization.organization_founder.organizations_founded ?x1 .
?x1 ns:people.person.parents|ns:fictional_universe.fictional_character.parents|ns:organization.organization.parent/ns:organization.organization_relationship.parent ?x2 .
?x2 a ns:business.employer .
M1 ns:organization.organization.founders ?x0 .
M1 ns:organization.organization.founders M2 .
M1 ns:organization.organization.founders M3 .
M4 ns:organization.organization.founders ?x0 .
M4 ns:organization.organization.founders M2 .
M4 ns:organization.organization.founders M3
}