8.2 Analyzing rules 219 With respect to the second question, some rules do apply to a wider set of cases than might be assumed from the documentation. For example, whereas rule 3 applies only to transfer instruments (since only these involve a consideration), rules 1 and 2A apply to all instruments documenting real property trans- actions, the term for which is `real property instrument'. As for rule 2B, there are likely to be analogous rules for other types of real property instruments but rule 2B applies only to transfer instruments. Note that, in generalizing rules 1 and 2A, we may need to do more than simply generalize the sub- ject term; verb phrases and other terms may need to be generalized too, as in the following updated versions of these two rule statements: 1. "The Land Title Reference for the Land Title that is involved in the Real Property Transaction documented in a Real Property Instrument must be specified in that Real Property Instrument." 2A. "The Full Name of the Transacting Party that takes part in the Real Property Transaction documented in a Real Property Instrument must be specified in that Real Property Instrument." We then need check that the necessary fact types are present in the fact model: F185. real property transaction involves land title/ land title is involved in real property transaction F186. real property instrument documents real property transaction/ real property transaction is documented in real property instrument