Performances can be impromptu.Logical formLearned from137 sentences. A dance can be impromptu.Logical formLearned from127 sentences. A memorial can be impromptu.Logical formLearned from122 sentences. A decision can be impromptu.Logical formLearned from121 sentences. A protest can be impromptu.Logical formLearned from112 sentences. A (jam session) can be impromptu.Logical formLearned from110 sentences. An announcement can be impromptu.Logical formLearned from109 sentences. A celebration can be impromptu.Logical formLearned from108 sentences. A gathering can be impromptu.Logical formLearned from106 sentences. A (vacation photo) can be impromptu.Logical formLearned from104 sentences. Speeches can be impromptu.Logical formLearned from103 sentences. A lesson can be impromptu.Logical formLearned from101 sentences. An appearance can be impromptu.Logical formLearned from101 sentences. Memorials can be impromptu.Logical formLearned from101 sentences. A demonstration can be impromptu.Logical formLearned from100 sentences.