Detailed Instructions: Given a paragraph, your job is to generate a question that can be answered from the passage. The answer to your question should be a single entity, person, time, etc. that can be extracted from the passage.
Q: Published at a time of rising demand for German-language publications, Luther's version quickly became a popular and influential Bible translation. As such, it made a significant contribution to the evolution of the German language and literature. Furnished with notes and prefaces by Luther, and with woodcuts by Lucas Cranach that contained anti-papal imagery, it played a major role in the spread of Luther's doctrine throughout Germany. The Luther Bible influenced other vernacular translations, such as William Tyndale's English Bible (1525 forward), a precursor of the King James Bible.
A:
At the time of Martin Luther what was in demand?