Was a company whose founder founded M3 founded by M1 and M2
SELECT count(*) WHERE {
?x0 a ns:business.employer .
?x0 ns:organization.organization.founders ?x1 .
?x0 ns:organization.organization.founders M1 .
?x0 ns:organization.organization.founders M2 .
?x1 ns:organization.organization_founder.organizations_founded M3
}