prompt: Produce a sentence which has a cefr level of "b2" that contains the following words: heine, prisons, kept.
label: Heine felt embarrassed and ashamed to find himself in such company, especially as Weitling not only kept his cap on and remained seated in Heine's presence, but also kept rubbing his leg; he had been chained up in various prisons, he explained, and his leg still itched where the iron ring had chafed it.