In this task, you will be presented with a context from an academic paper and you have to write an answerable question based on the context. Your questions can be extractive, abstractive, or yes-no questions.
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Question: The De7 database used for this study was designed by Marc Schroeder as one of the first attempts of creating diphone databases for expressive speech synthesis BIBREF2. The database contains three voice qualities (modal, soft and loud) uttered by a German female speaker, with about 50 minutes of speech available for each voice quality.

Answer: What large corpus is used for experiments?

Question: In Sec. "Materials and Methods" we discuss our materials and methods, including the dataset we studied, how we preprocessed that data and extracted a 'causal' corpus and a corresponding 'control' corpus, and the details of the statistical and language analysis tools we studied these corpora with.

Answer: Do they use expert annotations, crowdsourcing, or only automatic methods to analyze the corpora?

Question: We test the character and word-level variants by predicting hashtags for a held-out test set of posts.

Answer:
What other tasks do they test their method on?