Assertion: quotation mark | /r/AtLocation | the expression
Facets:
Source sentences:
text: So understood there are denumerably many distinct quotation marks, each formed by prefixing a natural number n of strokes to a small circle, and in order to meaningfully enclose an expression with Boolos quotation marks we have to choose quotation marks of a ‘higher order’ than the quotation marks that occur in the expression to be quoted (if there are any) and each quotation mark in a grammatical sentence is to be ‘paired’ with the next identical quotation mark (Boolos 1995, p. 291).