With no explanation, label text_A→text_B with either "DON'T KNOW", "NO" or "YES".
text_A: The two next encounter two Benedictine friars travelling on the road ahead of a lady in a carriage. The friars are not travelling with the lady, but happen to be travelling on the same road. Don Quixote takes the friars to be enchanters who hold the lady captive, knocks a friar from his horse, and is challenged by an armed Basque traveling with the company. As he has no shield, the Basque uses a pillow from the carriage to protect himself, which saves him when Don Quixote strikes him. Cervantes chooses this point, in the middle of the battle, to say that his source ends here. Soon, however, he resumes Don Quixote's adventures after a story about finding Arabic notebooks containing the rest of the story by Cid Hamet Ben Engeli. The combat ends with the lady leaving her carriage and commanding those traveling with her to "surrender" to Don Quixote.
text_B: Did the Basque have a shield to protect himself?
NO.