 As mentioned above, (18) has a reading on which the second sentence of the discourse attributes a general belief to Scott (something like the belief that a man who broke into Sarah’s apartment came in through the window). On a dynamic approach to (18), the quantifier in the first sentence semantically binds the variable in the second sentence. But then this semantically amounts to quantification into the verb of attitude, and so will not result in a reading of the second sentence on which it attributes a general belief to Scott. Hence, dynamic approaches need to invoke some other mechanism to get the reading of the second sentence in  question.[21]