Did M1 found M2 , found M3 , found a company , and found a company
SELECT count(*) WHERE {
?x0 a ns:business.employer .
?x1 a ns:business.employer .
M1 ns:organization.organization_founder.organizations_founded ?x0 .
M1 ns:organization.organization_founder.organizations_founded ?x1 .
M1 ns:organization.organization_founder.organizations_founded M2 .
M1 ns:organization.organization_founder.organizations_founded M3
}