“…von Stechow 1981, Jacobs 1984, Krifka 1992; for application to question-answer relations, see von Stechow 1990). Focus leads to a partition of the semantic material of an expression into a background part and a focus part, which I render here as a pair 〈B, F〉: (27) Notice that when we apply the background B to the focus F to form the meaning B(F), we arrive at the regular interpretation.…”