A source may pertain-to a country.Logical formLearned from2 715 sentences. A source may pertain-to a problem.Logical formLearned from2 632 sentences. Sources can be in a world-city.Logical formLearned from2 586 sentences. Sources may pertain-to an international-political-entity.Logical formLearned from2 473 sentences. A source may pertain-to an information.Logical formLearned from2 409 sentences. A source may say that something-is-the-case.Logical formLearned from2 382 sentences. Sources can be constituted-of-or-filled-with revenue.Logical formLearned from2 381 sentences. A source can be constituted-of-or-filled-with tension.Logical formLearned from2 371 sentences. A source can be constituted-of-or-filled-with funding.Logical formLearned from2 276 sentences. Sources may pertain-to a country.Logical formLearned from2 119 sentences. A source can be constituted-of-or-filled-with food.Logical formLearned from2 072 sentences. A source can be constituted-of-or-filled-with strength.Logical formLearned from2 031 sentences. A range can be constituted-of-or-filled-with sources.Logical formLearned from2 015 sentences. A source can be trusted.Logical formLearned from1 917 sentences. Sources can be other.Logical formLearned from1 907 sentences.