A male may wear a hard hat.Logical formLearned from28 sentences. A fighter can be hard.Logical formLearned from28 sentences. A hard drive may undergo a use.Logical formLearned from28 sentences. A dog can be hard.Logical formLearned from28 sentences. Success may require hard work.Logical formLearned from28 sentences. A time can be hard.Logical formLearned from28 sentences. A scrubbing can be hard.Logical formLearned from28 sentences. A flame can be hard.Logical formLearned from28 sentences. A law can be hard.Logical formLearned from28 sentences. A speech can be hard.Logical formLearned from28 sentences. Code can be hard.Logical formLearned from28 sentences. A medicine can be hard.Logical formLearned from28 sentences. Time can be hard.Logical formLearned from28 sentences. A female may find hard.Logical formLearned from28 sentences. Persons may have some hard times.Logical formLearned from28 sentences.