Was M2 acquired by M3 , acquired by a person 's child 's employer , and acquired by M0 's employer
SELECT count(*) WHERE {
?x0 ns:business.employer.employees/ns:business.employment_tenure.person M0 .
?x1 ns:business.employer.employees/ns:business.employment_tenure.person ?x2 .
?x2 ns:people.person.parents|ns:fictional_universe.fictional_character.parents|ns:organization.organization.parent/ns:organization.organization_relationship.parent ?x3 .
?x3 a ns:people.person .
M2 ns:organization.organization.acquired_by/ns:business.acquisition.acquiring_company ?x0 .
M2 ns:organization.organization.acquired_by/ns:business.acquisition.acquiring_company ?x1 .
M2 ns:organization.organization.acquired_by/ns:business.acquisition.acquiring_company M3
}