question: Did M1 , M2 , M3 , M4 , M5 , M6 , and M7 influence a character
query: SELECT count(*) WHERE {
  ?x0 a ns:fictional_universe.fictional_character .
  M1 ns:influence.influence_node.influenced ?x0 .
  M2 ns:influence.influence_node.influenced ?x0 .
  M3 ns:influence.influence_node.influenced ?x0 .
  M4 ns:influence.influence_node.influenced ?x0 .
  M5 ns:influence.influence_node.influenced ?x0 .
  M6 ns:influence.influence_node.influenced ?x0 .
  M7 ns:influence.influence_node.influenced ?x0
  }