However, it is often useful to create features based on the conjunction of several simple predicates: The above feature could be useful for disambiguating the token Batenberg 1 ('Batenberg'), which can be a person's name (e.g., when followed by upravl va, 'ruled ').
it could be also part of a location (e.g., when preceded by plowad, 'a square'), and thus we might want to have a special feature for this case: The system already uses tens of thousands of features, which makes it infeasible to create predicates for the conjunction of all pairs of simple predicates.