Were M2 , M4 , and M5 founded by M3 and founded by a British person
SELECT count(*) WHERE {
?x0 a ns:people.person .
?x0 ns:people.person.nationality ns:m.07ssc .
M2 ns:organization.organization.founders ?x0 .
M2 ns:organization.organization.founders M3 .
M4 ns:organization.organization.founders ?x0 .
M4 ns:organization.organization.founders M3 .
M5 ns:organization.organization.founders ?x0 .
M5 ns:organization.organization.founders M3
}