For example, in Figure 3, the partial parse of the span confirm or deny reports, the extended lexical entries for the words outside the span (He, refused and to) are completely unspecified.
the extended lexical entries for words inside the span have specified categories, but can contain underspecified dependencies: we can compute an upper bound for the outside score of a partial parse as a sum of the upper bounds of the unspecified components of each extended lexical entry.