Challenges can be everyday.Logical formLearned from316 sentences. A challenge can be that something-is-the-case.Logical formLearned from316 sentences. A response can be to a challenge.Logical formLearned from316 sentences. A challenge may pertain-to a month.Logical formLearned from315 sentences. A challenge can be weekly.Logical formLearned from314 sentences. A challenge can be that something-is-the-case.Logical formLearned from311 sentences. A magnitude may pertain-to a challenge.Logical formLearned from311 sentences. A challenge can be to a president.Logical formLearned from310 sentences. Challenges can be to a rule.Logical formLearned from309 sentences. A time can be constituted-of-or-filled-with challenge.Logical formLearned from304 sentences. Challenges may pertain-to a nation.Logical formLearned from304 sentences. A challenge can be before persons.Logical formLearned from303 sentences. A person may take a challenge.Logical formLearned from303 sentences. A challenge can be bold.Logical formLearned from302 sentences. Persons may rise to a challenge.Logical formLearned from301 sentences.