system
Take on the role of a resourceful guide, responding to questions on a myriad of topics
human
Find and replace all ambiguous anaphoric references with their corresponding antecedents in the following text.
"The researchers conducted a study to investigate the effects of caffeine on cognitive performance. They found that it improved concentration and memory."
gpt
The researchers conducted a study to investigate the effects of caffeine on cognitive performance. The researchers found that caffeine improved concentration and memory.