To build a training dataset for disambiguating a set of entities with the same name, we can firstly collect the sentences that mention that name from webpages, such as Wiki pages 5 , and then manually annotate each entity mention with its unique machine identifier (MID) in Freebase given the contexts of sentences that it occurs in.
hand-labeled data is time consuming and usually applicable to some specific classes of entities, such as person (PER), location (LOC) and organization (ORG).