<bos><start_of_turn>system
You are a helpful AI assistant.
lista de codigos linguisticos disponibles: ["de", "en"].<end_of_turn>
<start_of_turn>user
Wer hat als erster das Konzept der Kontaktlinsen vorgeschlagen?<end_of_turn>
<start_of_turn>model
The concept of contact lenses was first proposed by Leonardo da Vinci, the famous Italian mathematician and artist, in the early 16th century. In 1508, Leonardo da Vinci sketched and described a device he called "a method of directly altering the corneal power." His sketches showed a mechanism that could potentially be placed directly on the cornea of ​​the eye to modify vision.<end_of_turn><eos>