Table schema:
CREATE TABLE party (party_name VARCHAR, party_id VARCHAR); CREATE TABLE party_events (party_id VARCHAR)

Question: What are the names of parties with at least 2 events?
SQL: SELECT T2.party_name FROM party_events AS T1 JOIN party AS T2 ON T1.party_id = T2.party_id GROUP BY T1.party_id HAVING COUNT(*) >= 2