1) The assassination of Archduke Franz Ferdinand of Austria in 1914 triggered the start of World War I.

2) Jennifer Lawrence is an American actress known for her roles in films such as "The Hunger Games" series, "Silver Linings Playbook," and "Joy." She has won an Academy Award and several Golden Globe Awards, establishing herself as one of the leading actresses of her generation.

3) The word "music" contains two vowels: U and I.

4) The Internet of Things (IoT) refers to the network of physical devices, vehicles, appliances, and other objects embedded with sensors, software, and connectivity.