Were M4 , M5 , and M6 founded by a film producer that wrote M2 and M3 and edited M1
SELECT count(*) WHERE {
?x0 a ns:film.producer .
?x0 ns:film.editor.film M1 .
?x0 ns:film.writer.film M2 .
?x0 ns:film.writer.film M3 .
M4 ns:organization.organization.founders ?x0 .
M5 ns:organization.organization.founders ?x0 .
M6 ns:organization.organization.founders ?x0
}