Rewrite each original sentence in order to make it easier to understand by non-native speakers of English. You can do so by replacing complex words with simpler synonyms (i.e. paraphrasing), deleting unimportant information (i.e. compression), and/or splitting a long complex sentence into several simpler ones. The final simplified sentences need to be grammatical, fluent, and retain the main ideas of their original counterparts without altering their meanings.

The video premiered on MTV's Headbangers Ball on October 25, 2008 as part of the Headbangers Ball 20th anniversary special programming.
The video first played on MTV's Headbangers Ball in 2008.

String theory is a developing branch of theoretical physics that combines quantum mechanics and general relativity into a quantum theory of gravity.
String theory combines quantum mechanics and general relativity to become a quantum theory of gravity.

Upper body Sleeveless shirt Tank top, wife beater, singlet A sleeveless garment similar to a T-shirt.

Upper body Sleeveless shirt Tank top is also called a wife beater or singlet. It is a sleeveless garment similar to a T-shirt.

