A trip can be hard.Logical formLearned from85 sentences. An expression can be hard.Logical formLearned from85 sentences. An information can be hard.Logical formLearned from85 sentences. A smile can be hard.Logical formLearned from85 sentences. A male may find hard.Logical formLearned from85 sentences. A bit can be constituted-of-or-filled-with hard work.Logical formLearned from85 sentences. An infrastructure can be hard.Logical formLearned from84 sentences. A fastball can be hard.Logical formLearned from84 sentences. A breath can be hard.Logical formLearned from84 sentences. Foods can be hard.Logical formLearned from84 sentences. Beds can be hard.Logical formLearned from84 sentences. A boy can be hard.Logical formLearned from84 sentences. A love can be hard.Logical formLearned from84 sentences. A nature can be hard.Logical formLearned from84 sentences. Lives can be hard.Logical formLearned from84 sentences.