Was M1 acquired by M0 's sibling 's employer and acquired by M2 , M3 , and M4
SELECT count(*) WHERE {
?x0 ns:business.employer.employees/ns:business.employment_tenure.person ?x1 .
?x1 ns:people.person.sibling_s/ns:people.sibling_relationship.sibling|ns:fictional_universe.fictional_character.siblings/ns:fictional_universe.sibling_relationship_of_fictional_characters.siblings M0 .
FILTER ( ?x1 != M0 ) .
M1 ns:organization.organization.acquired_by/ns:business.acquisition.acquiring_company ?x0 .
M1 ns:organization.organization.acquired_by/ns:business.acquisition.acquiring_company M2 .
M1 ns:organization.organization.acquired_by/ns:business.acquisition.acquiring_company M3 .
M1 ns:organization.organization.acquired_by/ns:business.acquisition.acquiring_company M4
}