 Anaphora is sometimes characterized as the phenomenon whereby the interpretation of an occurrence of one expression depends on the interpretation of an occurrence of another or whereby an occurrence of an expression has its referent supplied by an occurrence of some other expression in the same or another  sentence.[1]  However, these are at best very rough characterizations of the phenomena, since things other than anaphoric expressions satisfy the first characterization and many cases of anaphora fail to satisfy the second. For example, in some sense of “interpretation”, the interpretation of the expression “bank” in the following sentence depends on the interpretation of other expressions (in particular, “of the river”):