<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
Who invented the equals sign for '="?<end_of_turn>
<start_of_turn>model
The "=" symbol, also called the equal sign, is a mathematical symbol used to indicate mathematical equality. It was invented in 1557 by the Welshman Robert Recorde. The equal symbol is used for two things or financial quantities that are said to be equal.<end_of_turn><eos>