Table schema:
CREATE TABLE table_name_3 (penanced VARCHAR, number_of_autos_da_fé_with_known_sentences VARCHAR)

Question: How many were penanced when the number with known sentences was 71 (1600–1773)?
SQL: SELECT penanced FROM table_name_3 WHERE number_of_autos_da_fé_with_known_sentences = "71 (1600–1773)"