```text <http://a.example/S1> { <http://a.example/p1> [' !"#$%&\'()/:;<=>?@[]^_`{|}~'] } ``` is interpreted as `" !\"#$%&\\'()/:;<=>?@[]^_`{|}~"` instead of `" !\"#$%&'()/:;<=>?@[]^_`{|}~"` (escape for single quote is escaped rather than removed)
is interpreted as
" !\"#$%&\\'()/:;<=>?@[]^_{|}~"instead of" !"#$%&'()/:;<=>?@[]^_{|}~"(escape for single quote is escaped rather than removed)