I need my extracted-adjunct phrase to allow SLASH-ed head daughters because I want multiple questions of the Who went where? type which in Russian seem to allow various orders, with Who where went? being perfectly acceptable (and not echo).
At the same time, actual multiple adjunct extraction seems really iffy: ??Where when did Kim go?, I really don’t think that’s a normal sentence at this point.
Right now I have an unrestricted adjunct extraction which, first of all, will license multiple adjunct extraction and second, you have to wait for the parser to run out of edges before it parses any sentence. That’s of course not desirable.
Are we talking here about an append list of length 1 (something I don’t right now have in my grammar)? And that append list of length 1 would be… whose SLASH value?