question: Did M2 marry a Mexican cinematographer 's Mexican parent and influence M3 , M4 , M5 , and M6
query: SELECT count(*) WHERE {
  ?x0 ns:people.person.children|ns:fictional_universe.fictional_character.children|ns:organization.organization.child/ns:organization.organization_relationship.child ?x1 .
  ?x0 ns:people.person.nationality ns:m.0b90_r .
  ?x1 a ns:film.cinematographer .
  ?x1 ns:people.person.nationality ns:m.0b90_r .
  FILTER ( M2 != ?x0 ) .
  M2 ns:influence.influence_node.influenced M3 .
  M2 ns:influence.influence_node.influenced M4 .
  M2 ns:influence.influence_node.influenced M5 .
  M2 ns:influence.influence_node.influenced M6 .
  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
  }