question: Was M2 a male person 's female spouse
query: SELECT count(*) WHERE {
  ?x0 a ns:people.person .
  ?x0 ns:people.person.gender ns:m.05zppz .
  FILTER ( M2 != ?x0 ) .
  M2 ns:people.person.gender ns:m.02zsn .
  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
  }