Table schema:
CREATE TABLE votes (contestant_number VARCHAR); CREATE TABLE contestants (contestant_number VARCHAR, contestant_name VARCHAR)

Question: What are the contestant numbers and names of the contestants who had at least two votes?
SQL: SELECT T1.contestant_number, T1.contestant_name FROM contestants AS T1 JOIN votes AS T2 ON T1.contestant_number = T2.contestant_number GROUP BY T1.contestant_number HAVING COUNT(*) >= 2