Task: Question Answering
Input (English): We used Amazon Mechanical Turk (AMT) for our annotations, restricting the task to workers in five English-speaking countries (USA, UK, Canada, New Zealand, and Australia), more than 1000 finished HITs and at least a 95% acceptance rate. 
 Question: What crowdsourcing platform did they use?
Output (English): Amazon Mechanical Turk (AMT)