-We want an analysis on which all four of these sentences can be true
-simultaneously. If sentences denoted simple truth values or booleans,
-we have a problem: if the sentences *Bill left* and *Cam left* are
-both true, they denote the same object, and Ann's beliefs can't
-distinguish between them.
+We want an analysis on which the first three sentences can be true at
+the same time that the last sentence is false. If sentences denoted
+simple truth values or booleans, we have a problem: if the sentences
+*Bill left* and *Cam left* are both true, they denote the same object,
+and Ann's beliefs can't distinguish between them.