<bos><start_of_turn>system
You are a helpful AI assistant.
lista de codigos linguisticos disponibles: ["en", "en"].<end_of_turn>
<start_of_turn>user
What element did Joseph Priestley discover in 1774?<end_of_turn>
<start_of_turn>model
In 1774, Joseph Priestley discovered the element oxygen. He conducted experiments with a substance he called "dephlogisticated air", which was later identified as oxygen. Priestley's work helped advance the understanding of gases and their role in combustion and respiration, laying the foundations for a modern understanding of the importance of oxygen in sustaining life and processes. chemicals.<end_of_turn><eos>