Assertion: brown's book | /r/HasProperty | constrained by historical 1960s
Facets:
value: for a start
type: PURPOSE
Source sentences:
text: For a start, the book is constrained by its now-historical (1960s) setting as well as the fact that it is set in America and at least one of the mysteries requires a little bit of American history knowledge (although admittedly, the mystery can be solved without that tidbit of information).