Complex sentence: Seattle Slew then added the Wood Memorial Stakes on April 23 by 3¼ lengths, similar tactics to the Flamingo as Slew was eased after opening a six length advantage.
Split into simpler sentences: Seattle Slew then added the Wood Memorial Stakes on April 23 by 3¼ lengths. In the Wood, his jockey used similar tactics to the Flamingo, easing up after Slew opened a six length advantage.