Was a female British screenwriter that founded M2 and M3 M0
SELECT count(*) WHERE {
M0 a ns:film.writer .
M0 ns:organization.organization_founder.organizations_founded M2 .
M0 ns:organization.organization_founder.organizations_founded M3 .
M0 ns:people.person.gender ns:m.02zsn .
M0 ns:people.person.nationality ns:m.07ssc
}