1) The first consumer digital video recorder (DVR), the TiVo, was introduced in 1999 and allowed users to record and store television programs for later viewing.

2) The word "oxygen" contains two vowels: O and E.

3) The President of the United States serves as the head of state and the head of government, responsible for leading the executive branch and representing the nation domestically and internationally.

4) Cricket, originating in England, is a popular sport played in many countries and is known for its distinctive rules and terminology.