1) The word "computer" contains three vowels: O, U, and E.

2) The concept of human rights advocates for the basic rights and freedoms to which all individuals are entitled, regardless of their nationality, ethnicity, religion, or other characteristics.

3) The Triple Double in basketball refers to a player achieving double-digit totals in three of the following statistical categories: points, rebounds, assists, steals, or blocks.

4) The concept of gravity was famously described by Sir Isaac Newton after an apple fell on his head.