TODO: link to the explanation of splitting of subordinating suffixes.
The following needs more discussion
We also analyze the nominal predicates with clausal subjects formed by subordinating conjunction ki similarly.
In the METU-Sabancı treebank they are marked (somewhat inconsistently) as modifiers rather than main predicates.
İyi ki okumuşsun . \n Good that you have read (that you read it is good)
csubj(İyi, okumuşsun)
Tabii ki okudum . \n Of course I read it (that I read it is natural)
csubj(Tabii, okumuşsun)
Treebank Statistics (UD_Turkish)
This relation is universal.
167 nodes (0%) are attached to their parents as csubj.
167 instances of csubj (100%) are right-to-left (child precedes parent).
Average distance between parent and child is 3.19760479041916.
The following 10 pairs of parts of speech are connected with csubj: VERB-VERB (110; 66% instances), ADJ-VERB (25; 15% instances), NOUN-VERB (17; 10% instances), ADV-VERB (4; 2% instances), VERB-NOUN (4; 2% instances), PUNCT-VERB (2; 1% instances), VERB-PRON (2; 1% instances), CONJ-VERB (1; 1% instances), PRON-VERB (1; 1% instances), VERB-ADJ (1; 1% instances).
# visual-style 4 bgColor:blue
# visual-style 4 fgColor:white
# visual-style 8 bgColor:blue
# visual-style 8 fgColor:white
# visual-style 8 4 csubj color:blue
1 Büyük büyük ADJ Adj _ 2 amod _ _
2 dayının dayı NOUN Noun Case=Gen|Number=Sing|Number[psor]=Sing|Person=3|Person[psor]=2 4 nmod:poss _ _
3 aşık aşık ADJ Adj _ 4 compound:lvc _ _
4 olması ol VERB Verb Aspect=Perf|Case=Nom|Mood=Ind|Negative=Pos|Number[psor]=Sing|Person[psor]=3|Tense=Pres|VerbForm=Ger 8 csubj _ _
5 ne ne ADJ Adj _ 7 advmod:emph _ _
6 kadar kadar ADP PCNom _ 5 case _ _
7 heyecan heyecan NOUN Noun Case=Nom|Number=Sing|Person=3 8 dobj _ _
8 ver ver VERB Verb Aspect=Perf|Mood=Ind|Negative=Pos|Tense=Pres 0 root _ _
9 ici ci ADP Agt _ 8 case _ _
10 . . PUNCT Punc _ 8 punct _ _