Complex sentence: Lt. Commander Shelby is a fictional character in the Star Trek universe, a Lieutenant Commander in Starfleet, she served onboard the USS Enterprise-D during the first Borg incursion of the United Federation of Planets.
Split into simpler sentences: Lt. Commander Shelby is a fictional character in the Star Trek universe. A Lieutenant Commander in Starfleet, she served onboard the USS Enterprise-D during the first Borg incursion of the United Federation of Planets.