select count(aaa.org_id) as lll,aaa.org_id from 
(match (person:/univ_demo/person)-[:person_to_org]->(org:/univ_demo/org) return person.id as "person_id", org.id as "org_id") aaa
group by aaa.org_id having count(distinct aaa.person_id)>=20



select count(id), count(distinct day) from /univ_demo/org
/**
output()
**/
;