Input (grade 8): On 19 May, the Berlin Zoo offered to buy Knut from NeumÃ 1\/4 nster and therefore negate their financial claim on the two-year-old polar bear.
Output (grade 8): On 19 May, Berlin Zoo offered to "buy" Knut from NeumÃ 1\/4 nster and take their financial claim on the two-year-old polar bear.