An optimism can be urgent.Logical formLearned from5 sentences. A lot of an optimism may be driven by demand.Logical formLearned from5 sentences. Optimism can be over an economic picture.Logical formLearned from5 sentences. Optimism may rebound.Logical formLearned from5 sentences. Optimism may be boosted by a turnaround.Logical formLearned from5 sentences. Chief may voice optimism.Logical formLearned from5 sentences. (Growth figures) may raise optimism.Logical formLearned from5 sentences. Representative of western powers may express optimism.Logical formLearned from5 sentences. A rally may be spurred by optimism.Logical formLearned from5 sentences. Optimism can be on (peace talks).Logical formLearned from5 sentences. A person may share an optimism of some governments.Logical formLearned from5 sentences. Optimism can be in a (stock market).Logical formLearned from5 sentences. Optimism may be generated by a thaw.Logical formLearned from5 sentences. Optimism can be about an economic-stimulus package.Logical formLearned from5 sentences. Fears may offset optimism.Logical formLearned from5 sentences.