What company whose British employee founded M2 and M3 did M1 found
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:business.employer .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person ?x1 .
?x0 ns:organization.organization.founders M1 .
?x1 ns:organization.organization_founder.organizations_founded M2 .
?x1 ns:organization.organization_founder.organizations_founded M3 .
?x1 ns:people.person.nationality ns:m.07ssc
}