Were M3 and M6 founded by a founder of M0 , M1 , and M2 and founded by M4 and M5
SELECT count(*) WHERE {
?x0 ns:organization.organization_founder.organizations_founded M0 .
?x0 ns:organization.organization_founder.organizations_founded M1 .
?x0 ns:organization.organization_founder.organizations_founded M2 .
M3 ns:organization.organization.founders ?x0 .
M3 ns:organization.organization.founders M4 .
M3 ns:organization.organization.founders M5 .
M6 ns:organization.organization.founders ?x0 .
M6 ns:organization.organization.founders M4 .
M6 ns:organization.organization.founders M5
}