What character did a employer of M2 and M3 employ and a company employ
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:fictional_universe.fictional_character .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x1 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x2 .
?x1 a ns:business.employer .
?x2 ns:business.employer.employees/ns:business.employment_tenure.person M2 .
?x2 ns:business.employer.employees/ns:business.employment_tenure.person M3
}