Was a film director that influenced M1 , M2 , and M3 employed by M4 and employed by M5 , M6 , and M7
SELECT count(*) WHERE {
?x0 a ns:film.director .
?x0 ns:influence.influence_node.influenced M1 .
?x0 ns:influence.influence_node.influenced M2 .
?x0 ns:influence.influence_node.influenced M3 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M4 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M5 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M6 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M7
}