Complex sentence: Kevin Harvick took the lead from Allmendinger on lap 23, before the first caution of the race came out on lap 31 after Landon Cassill blew an engine.
Split into simpler sentences: Kevin Harvick took the lead from A. J. Allmendinger on lap 23. The first caution of the race came out on lap 31 after Landon Cassill blew an engine.