Knowing who: How perspectives and context interact

In β, contrary to what was the case in α, sentence (2) appears to be false. Examples like the card scenario can be multiplied, and seem to lead to the conclusion that the truth of sentences where ‘knowing which’ or ‘knowing who’ (henceforth ‘knowing-wh’) constructions occur is context-dependent. Consider again contexts α and β. It is appealing to adopt the view that one of the roles that these contexts are playing in the determination of the truth of (1) is that of triggering different ways to ‘look’ at the objects in the domain (i.e.