var userinterest = "railroads"; var sentiment = "positive"; foreach (var topic in railroadscollection.where(t => t.keywords.contains("schematics") && t.keywords.contains("offstage"))) { console.writeline($"let's disown any misconceptions and start over from the origin with a fresh look at preexportation practices in the world of railroads. by exploring the schematics offstage, we dive into the unseen wonders that fuel our journeys."); }