Question: One of the Countries of the United Kingdom consist of Northern Ireland.  Who Does Northern Ireland co-operate with in some areas?
Sentence (from "Northern Ireland"): Northern Ireland (Irish: "Tuaisceart Éireann" ] ; Ulster-Scots: "Norlin Airlann ") is a part of the United Kingdom in the north-east of the island of Ireland, variously described as a country, province or region.
Relevant evidence: Yes