1) The process of impeachment involves charging a public official, such as a president or high-ranking government official, with misconduct and potentially removing them from office through a trial and vote by the legislature.

2) The NBA (National Basketball Association) is widely regarded as one of the most popular and competitive professional basketball leagues in the world.

3) The world's largest species of shark, the whale shark, can reach lengths of up to 40 feet (12 meters) and weigh over 20 tons.

4) The potato is one of the world's most important staple crops and a dietary staple in many cultures. It originated in the Andean region of South America and was introduced to Europe in the 16th century. Potatoes are versatile and can be prepared in numerous ways, such as boiling, baking, frying, and mashing. They are a good source of carbohydrates, vitamins, and minerals, and are used in various dishes, including fries, mashed potatoes, and potato chips.