List all the junior senators in 1997.
junior senators refers to state_rank = 'junior'; in 1997 refers to start like '1997%';
SELECT T1.first_name, T1.last_name FROM current AS T1 INNER JOIN `current-terms` AS T2 ON T1.bioguide_id = T2.bioguide WHERE T2.start LIKE '1997%' AND T2.state_rank = 'junior'