code$ swipl -s code_English.prolog 

% Janus 1.5.2 embeds Python 3.13.13 (main, Apr  8 2026, 18:23:14) [Clang 21.0.0 (clang-2100.0.123.102)]

Manual & tutorial: https://sandiway.arizona.edu Sandiway Fong (2024-2026)

Run: ?- parse(List,SO,L). (; for more answers)

  List = [..words] (input), SO,L = syntactic object, [..] spellout (output)

See derivation: ?- report. ?- graph. (<- after parse/3) ?- summary. (short) 

  for a long report ?- retract(no_fill).

LEX expansion: ⒜ WordNet: ?- useMorphy. (noMorphy) 

  assert/retract/?- : use_morphy(C), for C={v,n,a,r}. ⒝ edit lex.prolog

  ⒞ ?- addNoun(Word) (addTr/addUrg/addUnacc/addAdj/addPrep).

Welcome to SWI-Prolog (threaded, 64 bits, version 10.0.2)

SWI-Prolog comes with ABSOLUTELY NO WARRANTY. This is free software.

Please run ?- license. for legal details.

For online help and background, visit https://www.swi-prolog.org

For built-in help, use ?- help(Topic). or ?- apropos(Word).

% Interactive session; added `.` to Python `sys.path`

101 ?- parse([who,did,'Mary',saw],S,L).

Words: who did Mary saw 

Initial WS: saw_θ  v_saw:θ:pst:ext(do)  Mary  INFL_v  who  

INT/EXT: {C_Q_aux(null,pst,saw):left(who), {INFL_v, {who, {v_saw:θ:pst:ext(do), {saw_θ, Mary}}}}}

EXT: who null pst saw →→ 3sg pst saw Mary 

Spellout: who 3sg pst do saw Mary 

Spellout: who did saw Mary 

Blocked: inconsistent with input!

INT/EXT: {C_Q_aux(null,pst,saw):left(who), {INFL_v, {Mary, {v_saw:θ:pst:ext(do):box(who), {saw_θ, who}}}}}

EXT: who null pst saw →→ Mary 3sg pst saw 

Spellout: who 3sg pst do Mary saw 

Spellout: who did Mary saw 

Parse found! 

S = {C_Q_aux(null,pst,saw):left(who), {INFL_v, {Mary, {v_saw:θ:pst:ext(do):box(who), {saw_θ, who}}}}},

L = [who,did,Mary,saw] ;

INT/EXT: {C_Q_aux(null,pst,saw):left(who), {INFL_v, {{Mary, who}, {v_saw:θ:pst:ext(do):box(who), {saw_θ, {Mary, who}}}}}}

EXT: who null pst saw →→ {Mary,[and],[]} 3sg pst saw {Mary,[and],[]} 

Spellout: who 3sg pst do {Mary,[and],[]} saw {Mary,[and],[]} 

Blocked: EXT inconsistent!

Blocked: inconsistent with input!

Initial WS: saw_θ  v_saw:θ:pst:ext(do)  Mary  INFL_v  C_rel_who  

false.

103 ?- report.

REPORT LENGTH: 48

true.

104 ?-