From http://localhost:8000/wikimediafoundation.org/v3/page/html/L11_ExtraInfo_0902_Y%2Fen%2FUS/67456
What's happening is that there's a registered extension tag <html> on that wiki that's returning garbage. domino parses the returned html just fine but when we get to unpacking the dom, we now use migrating nodes between doms which barfs when trying to adopt the nodes.