Material can be from sources.Logical formLearned from216 sentences. Sources can be powerful.Logical formLearned from216 sentences. Sources can be constituted-of-or-filled-with renewable energy.Logical formLearned from215 sentences. A source can be long-term.Logical formLearned from215 sentences. A source can be constituted-of-or-filled-with revenues.Logical formLearned from214 sentences. A source can be constituted-of-or-filled-with life.Logical formLearned from214 sentences. Some sources can be constituted-of-or-filled-with (music recommendations).Logical formLearned from214 sentences. Sources can be constituted-of-or-filled-with variation.Logical formLearned from214 sentences. A (source income) may pertain-to a country.Logical formLearned from213 sentences. A source may pertain-to bacteria.Logical formLearned from213 sentences. A (source file) may pertain-to a person.Logical formLearned from213 sentences. A source can be constituted-of-or-filled-with enjoyment.Logical formLearned from213 sentences. A source can be close to a deal.Logical formLearned from213 sentences. A source can be constituted-of-or-filled-with (air pollution).Logical formLearned from212 sentences. A source can be constituted-of-or-filled-with finance.Logical formLearned from212 sentences.