Find the name, class and rank of all captains.
SELECT name ,  CLASS ,  rank FROM captain
SELECT name ,  CLASS ,  rank FROM captain
[{'Name': 'Captain Sir Henry Langford', 'Class': 'Third-rate ship of the line', 'Rank': 'Midshipman'}, {'Name': 'Captain Beves Conway', 'Class': 'Third-rate ship of the line', 'Rank': 'Midshipman'}, {'Name': 'Lieutenant Hugh Bolitho', 'Class': 'Cutter', 'Rank': 'Midshipman'}, {'Name': 'Lieutenant Montagu Verling', 'Class': 'Armed schooner', 'Rank': 'Midshipman'}, {'Name': 'Captain Henry Dumaresq', 'Class': 'Frigate', 'Rank': 'Lieutenant'}, {'Name': 'Captain Gilbert Pears', 'Class': 'Third-rate ship of the line', 'Rank': 'Lieutenant'}, {'Name': 'Commander Richard Bolitho', 'Class': 'Sloop-of-war', 'Rank': 'Commander, junior captain'}]