Were M4 and M7 founded by M5 and M6 and founded by M0 's American German male employee
SELECT count(*) WHERE {
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M0 .
?x0 ns:people.person.gender ns:m.05zppz .
?x0 ns:people.person.nationality ns:m.0345h .
?x0 ns:people.person.nationality ns:m.09c7w0 .
M4 ns:organization.organization.founders ?x0 .
M4 ns:organization.organization.founders M5 .
M4 ns:organization.organization.founders M6 .
M7 ns:organization.organization.founders ?x0 .
M7 ns:organization.organization.founders M5 .
M7 ns:organization.organization.founders M6
}