 A second proposal is a bit more complicated. On this view, hallucinations can share the same phenomenology as cases of object-perception, and this phenomenology suffices for the subject to experientially entertain a special semantic entity akin to an open sentence. This might be a thought of as a structured proposition with the same form as (1), except that in place of the perceived object, there is an unfilled position in a structure. This can be symbolized as follows: