A challenge may face a country.Logical formLearned from271 sentences. A challenge can be monumental.Logical formLearned from270 sentences. A challenge may face persons.Logical formLearned from270 sentences. Response can be to challenges.Logical formLearned from270 sentences. Challenges can be humanitarian.Logical formLearned from269 sentences. A challenge may pertain-to a supreme-court.Logical formLearned from268 sentences. Challenges can be in a country.Logical formLearned from268 sentences. A challenge may pertain-to a weekday.Logical formLearned from268 sentences. Challenges can be inevitable.Logical formLearned from265 sentences. A challenge can be from a female.Logical formLearned from264 sentences. Challenges can be methodological.Logical formLearned from264 sentences. A person may want a challenge.Logical formLearned from263 sentences. A response can be to a challenge.Logical formLearned from257 sentences. A challenge can be to a government.Logical formLearned from257 sentences. A challenge can be to a rule.Logical formLearned from253 sentences.