question: Was a person that M2 , M3 , M4 , and M5 influenced and were influenced by M0
query: SELECT count(*) WHERE {
  M0 a ns:people.person .
  M0 ns:influence.influence_node.influenced M2 .
  M0 ns:influence.influence_node.influenced M3 .
  M0 ns:influence.influence_node.influenced M4 .
  M0 ns:influence.influence_node.influenced M5 .
  M0 ns:influence.influence_node.influenced_by M2 .
  M0 ns:influence.influence_node.influenced_by M3 .
  M0 ns:influence.influence_node.influenced_by M4 .
  M0 ns:influence.influence_node.influenced_by M5
  }