Were M2 , M4 , M5 , and M6 founded by M3 and founded by a employee of M0 and M1
SELECT count(*) WHERE {
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M0 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M1 .
M2 ns:organization.organization.founders ?x0 .
M2 ns:organization.organization.founders M3 .
M4 ns:organization.organization.founders ?x0 .
M4 ns:organization.organization.founders M3 .
M5 ns:organization.organization.founders ?x0 .
M5 ns:organization.organization.founders M3 .
M6 ns:organization.organization.founders ?x0 .
M6 ns:organization.organization.founders M3
}