Were M3 and M4 executive produced by a Italian film producer that M1 employed
SELECT count(*) WHERE {
?x0 a ns:film.producer .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M1 .
?x0 ns:people.person.nationality ns:m.03rjj .
M3 ns:film.film.executive_produced_by ?x0 .
M4 ns:film.film.executive_produced_by ?x0
}