Original: The Sabines had a settlement near the eventual site of Rome, and erected an altar to Quirinus on the Collis Quirinalis, the Quirinal Hill, one of the Seven Hills of Rome.
Simplified: The Sabines had a settlement near the site of what was to become Rome, and erected an altar to Quirinus on the Collis Quirinalis, the Quirinal Hill, one of the Seven Hills of Rome.