Did M3 employ a character , employ a executive producer of M2 's sequel , and employ M0 's employee
SELECT count(*) WHERE {
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M0 .
?x1 a ns:fictional_universe.fictional_character .
?x2 ns:film.producer.films_executive_produced ?x3 .
?x3 ns:film.film.prequel M2 .
M3 ns:business.employer.employees/ns:business.employment_tenure.person ?x0 .
M3 ns:business.employer.employees/ns:business.employment_tenure.person ?x1 .
M3 ns:business.employer.employees/ns:business.employment_tenure.person ?x2
}