A gap can be between urban areas.Logical formLearned from8 sentences. A (household waste) can be urban.Logical formLearned from8 sentences. Inequalities can be urban.Logical formLearned from8 sentences. Earners can be urban.Logical formLearned from8 sentences. Green belts can be urban.Logical formLearned from8 sentences. (Combat situations) can be urban.Logical formLearned from8 sentences. (Service systems) can be urban.Logical formLearned from8 sentences. (Lighting systems) can be urban.Logical formLearned from8 sentences. Urban areas can be in a country.Logical formLearned from8 sentences. A development can be between urban areas.Logical formLearned from8 sentences. An urban planning can be rational.Logical formLearned from8 sentences. Poverty can be in urban areas.Logical formLearned from8 sentences. Conditions can be in urban centers.Logical formLearned from8 sentences. The urban economy may undergo a development.Logical formLearned from8 sentences. A (health center) can be urban.Logical formLearned from8 sentences.