An irony can be keen.Logical formLearned from13 sentences. Persons can be keen on an idea.Logical formLearned from13 sentences. Hunters can be keen.Logical formLearned from13 sentences. Sportsmen can be keen.Logical formLearned from13 sentences. A person can be keen on a person.Logical formLearned from13 sentences. Fisherman can be keen.Logical formLearned from13 sentences. A mind can be keen.Logical formLearned from12 sentences. A snowboarder can be keen.Logical formLearned from12 sentences. A (marathon runner) can be keen.Logical formLearned from12 sentences. A rower can be keen.Logical formLearned from12 sentences. A soldier can be keen.Logical formLearned from12 sentences. An eyesight can be keen.Logical formLearned from12 sentences. A coordination can be keen.Logical formLearned from12 sentences. A lover can be keen.Logical formLearned from12 sentences. A pang can be keen.Logical formLearned from12 sentences.