Hello, I'm testing some XQuery 3.1 features against a JSON-LD[1] document and had a few questions. In the JSON-LD format, the "@" symbol has special semantics in key names, but seems to cause problems with the 3.1 lookup operator. For example: json-doc("http://lae.princeton.edu/catalog/0bp35.jsonld")("@context") works as expected, but json-doc("http://lae.princeton.edu/catalog/0bp35.jsonld")?@context throws an error: [XPST0003] No specifier after lookup operator: '@'. Also, when using the "=>" operator, should it be possible to perform a lookup on the last expression in a chain, if that expression returns a map? For example: json-doc("http://lae.princeton.edu/catalog/0bp35.jsonld")("@context") evaluates to "http://iiif.io/api/presentation/2/context.json" and json-doc("http://lae.princeton.edu/catalog/0bp35.jsonld")("@context") => json-doc() returns another map object. So, how would one achieve this: json-doc(json-doc("http://lae.princeton.edu/catalog/0bp35.jsonld ")("@context"))("@context") using the arrow operator? Thanks, Tim [1] http://www.w3.org/TR/json-ld/ -- Tim A. Thompson Metadata Librarian (Spanish/Portuguese Specialty) Princeton University Library