Complex sentence: Two police officers, patrolling stairwells in the Louis H. Pink Houses in the East New York neighborhood of that borough entered a dark, unlit stairwell, one of them, officer Peter Liang, with his firearm drawn.
Split into simpler sentences: Two police officers, patrolling stairwells in the Louis H. Pink Houses in the East New York neighborhood of that borough entered a dark, unlit stairwell. One of them, officer Peter Liang, with his firearm drawn.