To clarify I'm not asking about HN itself but articles linked from HN.
I might not have a clear picture of what you're looking for, but items of type "story" returned by the HN API do have a URL field, which I believe correspond to submitted links.
You can scrape the text field of comment items, but that takes a bit more work.
Hopefull this will help: you're talking about a submission to HN, e.g. a link to a WSJ article complete with comments section, and OP is talking about the specific WSJ article.
Comments
I might not have a clear picture of what you're looking for, but items of type "story" returned by the HN API do have a URL field, which I believe correspond to submitted links.
You can scrape the text field of comment items, but that takes a bit more work.
Hopefull this will help: you're talking about a submission to HN, e.g. a link to a WSJ article complete with comments section, and OP is talking about the specific WSJ article.