No matter whether the ability to draw an inference is a simple or complex task, you can train yourself by reading carefully and considering all the evidence the speakers or the writers do not state directly. the ability to draw inferences is based first on a correct literal comprehension of the words, and second on the careful interpretation of the literal meaning. If you are interested in practising such a skill, you may find more examples of subtle inference in a political speech, a housing contract, the text of a new law, or the entire style, setting, and character development of a novel.