 Putative counterexamples to  (C)  are always complex expressions whose meaning appears to depend not only on the meanings of their constituents and on their structure but on some third factor as well. Sometimes this third factor is linguistic context: what a complex expression means seems to depend in part on how it is embedded into a sentence  (§ 4.2.1)  or a sequence of sentences  (§ 4.2.2).  In other cases the third factor is extra-linguistic: the setting in which the complex expression is used  (§ 4.2.3)  or someone’s beliefs about what the expression means  (§ 4.2.4).