Task: Question Answering
Input (English): Passage: Later, during the Koine Greek period, the aspirated and voiceless stops /tʰ d/ of Attic Greek lenited to voiceless and voiced fricatives, yielding /θ ð/ in Medieval and Modern Greek. Question: The lenited Attic Greek yielded /θ ð/ in what periods?
Output (English): Medieval and Modern Greek