A boil can be hard.Logical formLearned from88 sentences. Conditions can be hard.Logical formLearned from88 sentences. Details can be hard.Logical formLearned from87 sentences. Notebooks can be with hard drives.Logical formLearned from87 sentences. Turbulences can be hard.Logical formLearned from87 sentences. A hard top can be removable.Logical formLearned from87 sentences. A win can be hard.Logical formLearned from87 sentences. A landscaping can be hard.Logical formLearned from87 sentences. (Contact lenses) can be hard.Logical formLearned from86 sentences. A claim can be hard.Logical formLearned from86 sentences. A person can be hard of hearing.Logical formLearned from86 sentences. Skin can be hard.Logical formLearned from86 sentences. A read can be hard.Logical formLearned from86 sentences. A covering can be hard.Logical formLearned from85 sentences. A (cotton material) can be hard.Logical formLearned from85 sentences.