question: Did M2 , M3 , and M4 marry a Japanese screenwriter 's employer 's employee
query: SELECT count(*) WHERE {
  ?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x1 .
  ?x1 ns:business.employer.employees/ns:business.employment_tenure.person ?x2 .
  ?x2 a ns:film.writer .
  ?x2 ns:people.person.nationality ns:m.03_3d .
  FILTER ( M2 != ?x0 ) .
  FILTER ( M3 != ?x0 ) .
  FILTER ( M4 != ?x0 ) .
  M2 ns:people.person.spouse_s/ns:people.marriage.spouse|ns:fictional_universe.fictional_character.married_to/ns:fictional_universe.marriage_of_fictional_characters.spouses ?x0 .
  M3 ns:people.person.spouse_s/ns:people.marriage.spouse|ns:fictional_universe.fictional_character.married_to/ns:fictional_universe.marriage_of_fictional_characters.spouses ?x0 .
  M4 ns:people.person.spouse_s/ns:people.marriage.spouse|ns:fictional_universe.fictional_character.married_to/ns:fictional_universe.marriage_of_fictional_characters.spouses ?x0
  }