A person may apologize for a disappearance.Logical formLearned from8 sentences. Clues can be about a disappearance.Logical formLearned from8 sentences. A disappearance can be silent.Logical formLearned from8 sentences. A world-city may undergo a disappearance.Logical formLearned from8 sentences. A reason may pertain-to a disappearance.Logical formLearned from8 sentences. A disappearance may pertain-to a father.Logical formLearned from8 sentences. A tourism may undergo a disappearance.Logical formLearned from8 sentences. A reaction can be to a disappearance.Logical formLearned from8 sentences. A disappearance may pertain-to a niece.Logical formLearned from8 sentences. A victim may undergo a disappearance.Logical formLearned from8 sentences. An island may undergo a disappearance.Logical formLearned from8 sentences. A disappearance can be to the police.Logical formLearned from8 sentences. (Opposition figures) may undergo disappearances.Logical formLearned from8 sentences. A (college student) may undergo a disappearance.Logical formLearned from8 sentences. A US-president may mention a disappearance of high explosives.Logical formLearned from8 sentences.