Persons may achieve a milestone.Logical formLearned from25 sentences. A day can be a milestone.Logical formLearned from25 sentences. A milestone can be rare.Logical formLearned from25 sentences. A milestone can be for a world-city.Logical formLearned from24 sentences. Some milestone can be in a life.Logical formLearned from24 sentences. Some milestone can be for challenges.Logical formLearned from24 sentences. A book can be a milestone.Logical formLearned from24 sentences. Video may pertain-to a milestone.Logical formLearned from24 sentences. A milestone can be in an understanding of an illness.Logical formLearned from24 sentences. A treaty can be a milestone.Logical formLearned from24 sentences. A film can be a milestone.Logical formLearned from24 sentences. A milestone may undergo a delay.Logical formLearned from24 sentences. Some milestone can be in a recovery.Logical formLearned from24 sentences. A flight can be a milestone.Logical formLearned from24 sentences. A milestone may undergo a passing.Logical formLearned from24 sentences.