Question: Alexander Rossi, the American professional racing driver, came in 3rd place in which pair of motor races in April 2015? 
Sentence (from "2015 Monaco GP2 Series round"): The 2015 Monaco GP2 Series round was a pair of motor races held on 22 and 23 May 2015 at the Circuit de Monaco, Monte Carlo, Monaco as part of the GP2 Series.
Relevant evidence: No