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**Q: Who is the individual mentioned in the article?**
A: The individual mentioned is the mother of a mentally ill man who killed 10 people at a Colorado supermarket in 2021.
**Q: What does the mother say about her son?**
A: The mother describes her son as "sick" and indicates that he began acting strangely two years before the shooting occurred.
**Q: How many people were killed in the Colorado supermarket shooting?**
A: Ten people were killed in the shooting at the Colorado supermarket.
**Q: What is the mother's stance regarding her son's knowledge of the shooting plan?**
A: The mother denies that her son was aware of the plan to carry out the shooting.
**Q: When did the shooting take place?**
A: The shooting took place in 2021.