original: The largest by far is Triton, discovered by William Lassell just seventeen days after the discovery of Neptune itself.
simplifications: The largest by far is Triton.  It was discovered by William Lassell just seventeen days after the discovery of Neptune itself. The largest is Triton, found by William Lassell after Neptune was found. Triton is largest. Discovered by William Lassell seventeen days after discovery of Neptune. The largest by far is Triton. It was discovered by William Lassell. The finding came seventeen days after Neptune. The largest by far is Triton. It was discovered by William Lassell just seventeen days after the discovery of Neptune itself. Triton is the largest. It was discovered by William Lassell only 17 days after Neptune was discovered. The biggest is Triton. It was discovered by William Lassell shortly after Nepture was discovered. Triton is Neptune's largest satellite. It was discovered by William Lassel just seventeen days after the discovery of Neptune. Neptune's largest moon is Triton. It was discovered by William Lassell seventeen days after Neptune was discovered. The largest by far is Triton. I t was discovered by  William Lassell.  It was found just 17 days after the the discovery of Neptune itself.