Shadows can be vain.Logical formLearned from15 sentences. A promise can be vain.Logical formLearned from15 sentences. A battle can be vain.Logical formLearned from15 sentences. A star can be vain.Logical formLearned from14 sentences. Expectations can be vain.Logical formLearned from14 sentences. A superiority can be vain.Logical formLearned from14 sentences. An existence can be vain.Logical formLearned from14 sentences. An attempt can be vain.Logical formLearned from14 sentences. Endeavours can be vain.Logical formLearned from14 sentences. A prince can be vain.Logical formLearned from13 sentences. An opinion can be vain.Logical formLearned from13 sentences. A preaching can be vain.Logical formLearned from13 sentences. A presumption can be vain.Logical formLearned from13 sentences. A person can be vain that something-is-the-case.Logical formLearned from13 sentences. A superstition can be vain.Logical formLearned from12 sentences.