Before we talk about processing words, we need to decide what counts as a word. Let’s start by looking at one particular corpus (plural corpora), a computer-readable collection of text or speech. For example the Brown corpus is a million-word collection of samples from 500 written English texts from different genres (newspaper, fiction, non-fiction, academic, etc.), assembled at Brown University in 1963-64 (Kučera and Francis, 1967) . How many words are in the following Brown sentence?