programmer on the team, was stunned to find that the system was doing something called coreference resolution. This had been a huge sticking point in the effort to make computers process language properly. It referred to the task of finding all expressions that refer to the same entity in a text. For instance, in the sentence “The animal didn’t cross the street because it was too tired,” it’s obvious to us as humans that it refers to the animal. But change the sentence to “The animal didn’t cross the street because it was too wide,” and it now refers to the road. Until then, it had been
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