Task: Question Answering
Input (English): We build a dataset of Twitter accounts based on two lists annotated in previous works. For the non-factual accounts, we rely on a list of 180 Twitter accounts from BIBREF1. On the other hand, for the factual accounts, we use a list with another 32 Twitter accounts from BIBREF19 that are considered trustworthy by independent third parties. 
 Question: How did they obtain the dataset?
Output (English): For the non-factual accounts, we rely on a list of 180 Twitter accounts from BIBREF1 we use a list with another 32 Twitter accounts from BIBREF19 that are considered trustworthy