Tools may pertain-to a present.Logical formLearned from4 sentences. A sourcebook may provide (source materials) to a present.Logical formLearned from4 sentences. History can be to a present.Logical formLearned from4 sentences. A present may pertain-to a region.Logical formLearned from4 sentences. A race may pertain-to a (disease present).Logical formLearned from4 sentences. Proportions can be constituted-of-or-filled-with present.Logical formLearned from4 sentences. A present can be for a moment.Logical formLearned from4 sentences. Pollution can be at present.Logical formLearned from4 sentences. A present may be connected to the past.Logical formLearned from4 sentences. A treatment can be at present.Logical formLearned from4 sentences. A present can be available.Logical formLearned from4 sentences. A present can be constituted-of-or-filled-with fruit.Logical formLearned from4 sentences. A present may have an opportunity.Logical formLearned from4 sentences. A female may make present.Logical formLearned from4 sentences. An experience can be in a present.Logical formLearned from4 sentences.