Was M3 a male sibling of a female person whose employer was acquired by M2
SELECT count(*) WHERE {
?x0 a ns:people.person .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x1 .
?x0 ns:people.person.gender ns:m.02zsn .
?x1 ns:organization.organization.acquired_by/ns:business.acquisition.acquiring_company M2 .
FILTER ( M3 != ?x0 ) .
M3 ns:people.person.gender ns:m.05zppz .
M3 ns:people.person.sibling_s/ns:people.sibling_relationship.sibling|ns:fictional_universe.fictional_character.siblings/ns:fictional_universe.sibling_relationship_of_fictional_characters.siblings ?x0
}