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Alcohol was produced by fermentation and purified by distillation . Attempts to understand the behavior of matter extend back for more than 2500 years . As early as the sixth century BC , Greek philosophers discussed a system in which water was the basis of all things . You may have heard of the Greek postulate that matter consists of four elements : earth , air , fire , and water . Subsequently , an amalgamation of chemical technologies and philosophical speculations were spread from Egypt , China , and the eastern Mediterranean by alchemists , who endeavored to transform `` base metals '' such as lead into `` noble metals '' like gold , and to create elixirs to cure disease and extend life .
Please check all the words that can be used instead of the target word in the same context. Note that the morphology of the target (third person singular, past tense etc.) is considered to be applied to the candidate automatically in the process of paraphrasing.