 Even though she has no particular donkey in mind in uttering these sentences, we simply don’t get a numberless reading here. If Sarah beats some donkey she owns, the speaker has spoken truly even if she owns others she fails to beat. Or again, suppose we are debating whether anybody has an eight track tape player anymore, and one of us says “I’ll bet the following is true: some guy with a ‘68 Camaro owns an eight track player and he still uses it.” Again, there is no numberless reading for the pronoun in the second sentence, even though the speaker clearly has no particular eight-track player in mind. If some ‘68 Camaro driving guy owns and uses an eight-track player, the sentence is true even if he owns other eight track players that aren’t  used.[25]