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Help: blue = parse found inside. Abbreviations: WS: Workspace; SO: Syntactic Object; IA/EA: Internal/External Argument; INT/EXT: interface SO post-Merge/FormCopy; Initial WS: heads that may project after LEX word lookup. ...
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Words: John sees John
Initial WS 1: John seeθ vsee:θ:pres INFLv:3sg John 
WS 1: {seeθ, John} vsee:θ:pres INFLv:3sg John 
WS 2: {vsee:θ:pres, {seeθ, John}} INFLv:3sg John 
WS 3: {John, {vsee:θ:pres, {seeθ, John}}} INFLv:3sg
WS 4: {John, {INFLv:3sg, {John, {vsee:θ:pres, {seeθ, John}}}}} 
Final WS: {C, {John, {INFLv:3sg, {John, {vsee:θ:pres, {seeθ, John}}}}}} 
INT/EXT: {C, {John, {INFLv:3sg, {John, {vsee:θ:pres, {seeθ, John}}}}}}
Initial Spellout: John 3sg pres see
Spellout: John sees
Error: inconsistent spellout
WS 1: {seeθ, John} John vsee:θ:pres INFLv:3sg
WS 2: {vsee:θ:pres, {seeθ, John}} John INFLv:3sg
WS 3: {John, {vsee:θ:pres, {seeθ, John}}} INFLv:3sg
WS 4: {John, {INFLv:3sg, {John, {vsee:θ:pres, {seeθ, John}}}}} 
Final WS: {C, {John, {INFLv:3sg, {John, {vsee:θ:pres, {seeθ, John}}}}}} 
INT/EXT: {C, {John, {INFLv:3sg, {John, {vsee:θ:pres, {seeθ, John}}}}}}
Initial Spellout: John 3sg pres see
Spellout: John sees
Error: inconsistent spellout