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.

[EX Q]: Dennis Lee Hopper (born May 17, 1936) is an American actor, filmmaker and artist.
[EX A]: Dennis Lee Hopper is an American actor, filmmaker, and artist.

[EX Q]: Fluctuations of this line horizon describe all matter, so every elementary particle can be described by a mode of oscillation of a very small segment or loop of string.
[EX A]: Fluctuations of this line horizon describe all matter.  Every elementary particle can be described by a mode of oscillation of a very small piece or loop of string.

[EX Q]: It was discovered by a team of astronomers from the University of Hawaii led by Scott S. Sheppard, et al.
[EX A]:
It was discovered by a team of astronomers from the University of Hawaii. Scott S. Sheppard, et al. led it.

