question: Did a British character influence M1 and marry M3
query: SELECT count(*) WHERE {
  ?x0 a ns:fictional_universe.fictional_character .
  ?x0 ns:influence.influence_node.influenced M1 .
  ?x0 ns:people.person.nationality ns:m.07ssc .
  ?x0 ns:people.person.spouse_s/ns:people.marriage.spouse|ns:fictional_universe.fictional_character.married_to/ns:fictional_universe.marriage_of_fictional_characters.spouses M3 .
  FILTER ( ?x0 != M3 )
  }