For example the inclusion of "this/that" which like "it" can be used as anaphoric or event reference pronouns, or "your" which requires a similar deictic/generic disambiguation approach as for "you" (included).
they represent similar translation problems to those posed by "it" and "you" and in order to keep the number of pronoun tokens manageable when it comes to manual evaluation, certain exclusions must also be made in terms of pronoun forms.