Ill-Formed MRS?

I’m trying to generate from an MRS I composed. The output I want is something like “the unknown desk.” However, when I put my MRS into the ERG for generation I get an error saying it’s an ill-formed MRS. But at a glance I’m not seeing any differences between mine and the MRS output besides the following:

  1. I use a more abstract quantifier than the ERG output
  2. I don’t include ICONS

Issue #1 has not been a problem for me in any other case, so I don’t think that’s the problem. It’s possible issue #2 is the culprit, but when I do “the known desk” I don’t have ICONS, even though the ERG does when parsing, and I’m successfully able to generate, so if it is ICONS, why does it matter here and not in the other case?

Here is my MRS:

[ TOP: h24
  INDEX: e21
  RELS: < [ unknown LBL: h23 ARG: h11 ARG0: e21 ]
          [ def_udef_a_q LBL: h20 ARG0: h11 RSTR: h18 BODY: h19 ]
          [ _un-_a_neg LBL: h1 ARG0: i6 ARG1: e9 ]
          [ _know_v_1 LBL: h1 ARG0: e9 ARG1: i10 ARG2: h11 ]
          [ _desk_n_1 LBL: h1 ARG0: h11 ] >
  HCONS: < h18 qeq h1 h24 qeq h23 > ]


[ TOP: h0
  INDEX: e2 [ e SF: prop ]
  RELS: < [ unknown<0:16> LBL: h1 ARG: x4 [ x PERS: 3 NUM: sg IND: + ] ARG0: e2 ]
          [ _the_q<0:3> LBL: h5 ARG0: x4 RSTR: h6 BODY: h7 ]
          [ _know_v_1<4:11> LBL: h8 ARG0: e9 [ e SF: prop TENSE: untensed MOOD: indicative PROG: bool PERF: - ] ARG1: i10 ARG2: x4 ]
          [ _un-_a_neg<4:11> LBL: h8 ARG0: i11 ARG1: e9 ]
          [ _desk_n_1<12:16> LBL: h8 ARG0: x4 ] >
  HCONS: < h0 qeq h1 h6 qeq h8 >
  ICONS: < e9 topic x4 > ]

The arg0 of _desk_n_1 is h11 — if this gets converted to a handle then I would expect it to be ill-formed. Maybe change h11 to x11 and see if it helps?

Ah, yes! Thank you!

I was using the _know_v_1 : ARG0 e, ARG1 i, ARG2 h. synopsis for _know_v_1 rather than the _know_v_1 : ARG0 e, ARG1 u, ARG2 i. synopsis.

The elementary predication for a noun expects its ARG0 to be a variable of type “x”, not a handle, so your EP for _desk_n_1 is not well-formed.

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