 Lepore and Loewer 1989 respond to these entailment problems. They try to deal with all but the last, which concerns the relationship between so-called de dicto belief and de re belief (see the supplementary document, The De Re/De Dicto Distinction, op. cit.), by showing how the validity of the entailment is preserved by the addition of a premise that it is plausible to say we simply take for granted in assessing the validity of the entailments displayed above. The success of their strategy depends on the plausibility of the original entailment intuitions turning on our implicitly assuming the additional premise in question.