What character that M2 , M3 , M4 , and M5 were influenced by was a British writer of M1
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:fictional_universe.fictional_character .
?x0 ns:film.writer.film M1 .
?x0 ns:influence.influence_node.influenced M2 .
?x0 ns:influence.influence_node.influenced M3 .
?x0 ns:influence.influence_node.influenced M4 .
?x0 ns:influence.influence_node.influenced M5 .
?x0 ns:people.person.nationality ns:m.07ssc
}