Below is the given context delimited in triple quotes: 
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Context: 
How does EVA bots work?
EVA assistants are based on futuristic technologies covering Artificial Intelligence, Machine Learning and Natural Language Processing that simulates a natural human conversation and enhance user experience.
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Strictly answer the below only based on above context, if answer is not available in the context please say - 'i don't know': 
Question: what is the working of eva bots
Answer:  