A swimmer can be keen.Logical formLearned from42 sentences. A botanist can be keen.Logical formLearned from41 sentences. A surfer can be keen.Logical formLearned from41 sentences. A public interest can be keen.Logical formLearned from40 sentences. An ornithologist can be keen.Logical formLearned from40 sentences. A sensibility can be keen.Logical formLearned from39 sentences. Persons can be keen on dyings.Logical formLearned from39 sentences. An enjoyment can be keen.Logical formLearned from38 sentences. A person can be keen on living.Logical formLearned from38 sentences. A buying can be keen.Logical formLearned from38 sentences. A participant can be keen.Logical formLearned from37 sentences. A female can be keen on an idea.Logical formLearned from37 sentences. A debate can be keen.Logical formLearned from37 sentences. A proponent can be keen.Logical formLearned from36 sentences. A way can be keen.Logical formLearned from36 sentences.