Complex sentence: Share a Coke is a multi-national Coca-Cola debranding marketing campaign in the mid- 2010s where "Coca-Cola" is replaced on one side of a Coke bottle with the phrase "Share a Coke with" followed by a person's name.
Split into simpler sentences: Share a Coke is a multi-national marketing campaign in the mid- 2010s for Coca-Cola. It debrands the traditional Coke logo, replacing "Coca-Cola" from one side of a bottle with the phrase "Share a Coke with" followed by a person's name.