A past may undergo an understanding.Logical formLearned from212 sentences. A history may pertain-to the past.Logical formLearned from211 sentences. A person may think about the past.Logical formLearned from210 sentences. A person may be used in the past.Logical formLearned from210 sentences. Cases can be in the past.Logical formLearned from209 sentences. A memory may pertain-to a past.Logical formLearned from209 sentences. A story may pertain-to a past.Logical formLearned from209 sentences. A past can be traumatic.Logical formLearned from207 sentences. Persons may be doed in the past.Logical formLearned from207 sentences. A past may pertain-to a region.Logical formLearned from206 sentences. A past can be sexual.Logical formLearned from205 sentences. A person may change the past.Logical formLearned from204 sentences. Others can be in the past.Logical formLearned from202 sentences. Past can be prologue.Logical formLearned from201 sentences. A past can be controversial.Logical formLearned from200 sentences.