Was a person that M4 , M5 , M6 , M7 , and M8 were founded by and M2 and M3 employed M0
SELECT count(*) WHERE {
M0 a ns:people.person .
M0 ns:organization.organization_founder.organizations_founded M4 .
M0 ns:organization.organization_founder.organizations_founded M5 .
M0 ns:organization.organization_founder.organizations_founded M6 .
M0 ns:organization.organization_founder.organizations_founded M7 .
M0 ns:organization.organization_founder.organizations_founded M8 .
M0 ns:people.person.employment_history/ns:business.employment_tenure.company M2 .
M0 ns:people.person.employment_history/ns:business.employment_tenure.company M3
}