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([did,'John',meet,'Bill'],S,L).

Words: did John meet Bill 

Initial WS: Bill  meet_θ  v_meet:θ:pst:ext(do)  John  INFL_v  

INT/EXT: {C, {INFL_v, {John, {v_meet:θ:pst:ext(do), {meet_θ, Bill}}}}}

EXT: John 3sg pst meet Bill 

Spellout: John meeted Bill 

Blocked: inconsistent with input!

INT/EXT: {C_Q_aux(null,pst,meet), {INFL_v, {John, {v_meet:θ:pst:ext(do), {meet_θ, Bill}}}}}

EXT: null pst meet →→ John 3sg pst meet Bill 

Spellout: 3sg pst do John meet Bill 

Spellout: did John meet Bill 

Parse found! 

S = {C_Q_aux(null,pst,meet), {INFL_v, {John, {v_meet:θ:pst:ext(do), {meet_θ, Bill}}}}},

L = [did,John,meet,Bill] ;

INT/EXT: {C, {INFL_v, {Bill, {v_meet:θ:pst:ext(do), {meet_θ, John}}}}}

EXT: Bill 3sg pst meet John 

Spellout: Bill meeted John 

Blocked: inconsistent with input!

INT/EXT: {C_Q_aux(null,pst,meet), {INFL_v, {Bill, {v_meet:θ:pst:ext(do), {meet_θ, John}}}}}

EXT: null pst meet →→ Bill 3sg pst meet John 

Spellout: 3sg pst do Bill meet John 

Spellout: did Bill meet John 

Blocked: inconsistent with input!

INT/EXT: {C, {INFL_v, {{Bill, John}, {v_meet:θ:pst:ext(do), {meet_θ, {Bill, John}}}}}}

EXT: {Bill,[and],John} 3sg pst meet {Bill,[and],John} 

Blocked: EXT inconsistent!

Blocked: inconsistent with input!

INT/EXT: {C_Q_aux(null,pst,meet), {INFL_v, {{Bill, John}, {v_meet:θ:pst:ext(do), {meet_θ, {Bill, John}}}}}}

EXT: null pst meet →→ {Bill,[and],John} 3sg pst meet {Bill,[and],John} 

Spellout: 3sg pst do {Bill,[and],John} meet {Bill,[and],John} 

Blocked: EXT inconsistent!

Blocked: inconsistent with input!

false.

102 ?- report.

REPORT LENGTH: 50

true.