$1.$ Why is NLP considered to be a core enabling feature for AGI $($humanlike AI$)?2.$ Why do advanced NLP models tend to show significant discriminatory biases? $3.$ How is it possible to create a prosocial chatbot using training data from sources that include antisocial examples? $4.$ What are $4$ different approaches or architectures for building a chatbot? $5.$ How is NLP used within a search engine? $6.$ Write a regular expression to recognize your name and all the variations on its spelling $($including nicknames$)$ that you$$ve seen. $7.$ Write a regular expression to try to recognize a sentence boundary $($usually a period $("."),$ question mark $"?",$ or exclamation mark $"!")$