Did M1 , M5 , and M6 found M2 , found M3 and M4 , and found a company
SELECT count(*) WHERE {
?x0 a ns:business.employer .
M1 ns:organization.organization_founder.organizations_founded ?x0 .
M1 ns:organization.organization_founder.organizations_founded M2 .
M1 ns:organization.organization_founder.organizations_founded M3 .
M1 ns:organization.organization_founder.organizations_founded M4 .
M5 ns:organization.organization_founder.organizations_founded ?x0 .
M5 ns:organization.organization_founder.organizations_founded M2 .
M5 ns:organization.organization_founder.organizations_founded M3 .
M5 ns:organization.organization_founder.organizations_founded M4 .
M6 ns:organization.organization_founder.organizations_founded ?x0 .
M6 ns:organization.organization_founder.organizations_founded M2 .
M6 ns:organization.organization_founder.organizations_founded M3 .
M6 ns:organization.organization_founder.organizations_founded M4
}