well, they do statistical learning of inflections and closely related terms. google "knows" (believes with high probability, I guess) that PWC is an abbreviati

well, they do statistical learning of inflections and closely related terms. google "knows" (believes with high probability, I guess) that PWC is an abbreviation of PriceWaterhouseCoopers, for instance. you can see this directly in how google highlights terms in search results. you can certainly find instances where they "should" have gotten something but didn't, or made a mistake, but it works well enough most of the time.