Definition: 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.
Input: While the weight of matter is entirely dependent upon the strength of gravity, the mass of matter is invariant.

While the weight of matter is dependent on the strength of gravity, it's mass is not changing.