A marker is the word introducing a clause subordinate to another clause. For a complement clause, this will typically be that or whether. For an adverbial clause, the marker is typically a preposition like before or a subordinating conjunction fulfilling a similar role like while or although. The mark is a dependent of the subordinate clause head.
When a a noun or a verb takes a prepositionally marked non-core argument (modifier) and that modifier is a clause, then we also label that prepositon as mark (as it would not seem reasonable to call it case when it is marking a clause). The result will commonly be a doubly marked clause.
We have no useful information on whether users are at risk .
nsubj(have, We)
neg(information, no)
amod(information, useful)
dobj(have, information)
mark(risk, on)
mark(risk, whether)
nsubj(risk, users)
cop(risk, are)
case(risk, at)
acl(information, risk)
punct(have, .)
Treebank Statistics (UD_English)
This relation is universal.
9040 nodes (4%) are attached to their parents as mark.
9036 instances of mark (100%) are right-to-left (child precedes parent).
Average distance between parent and child is 2.47986725663717.
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1 When when ADV WRB PronType=Int 3 mark _ _
2 they they PRON PRP Case=Nom|Number=Plur|Person=3|PronType=Prs 3 nsubj _ _
3 saw see VERB VBD Mood=Ind|Tense=Past|VerbForm=Fin 11 advcl _ _
4 a a DET DT Definite=Ind|PronType=Art 5 det _ _
5 cartoon cartoon NOUN NN Number=Sing 3 dobj _ _
6 of of ADP IN _ 8 case _ _
7 their they PRON PRP$ Number=Plur|Person=3|Poss=Yes|PronType=Prs 8 nmod:poss _ _
8 prophet prophet NOUN NN Number=Sing 5 nmod _ SpaceAfter=No
9 , , PUNCT , _ 11 punct _ _
10 people people NOUN NNS Number=Plur 11 nsubj _ _
11 had have VERB VBD Mood=Ind|Tense=Past|VerbForm=Fin 0 root _ _
12 to to PART TO _ 13 mark _ _
13 die die VERB VB VerbForm=Inf 11 xcomp _ SpaceAfter=No
14 . . PUNCT . _ 11 punct _ _
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1 Now now ADV RB _ 4 advmod _ SpaceAfter=No
2 , , PUNCT , _ 4 punct _ _
3 people people NOUN NNS Number=Plur 4 nsubj _ _
4 wonder wonder VERB VBP Mood=Ind|Tense=Pres|VerbForm=Fin 0 root _ _
5 if if SCONJ IN _ 9 mark _ _
6 Google Google PROPN NNP Number=Sing 9 nsubj _ _
7 can can AUX MD VerbForm=Fin 9 aux _ _
8 even even ADV RB _ 9 advmod _ _
9 survive survive VERB VB VerbForm=Inf 4 ccomp _ _
10 . . PUNCT . _ 4 punct _ _
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1 i i PRON PRP Case=Nom|Number=Sing|Person=1|PronType=Prs 3 nsubj _ _
2 am be AUX VBP Mood=Ind|Number=Sing|Person=1|Tense=Pres|VerbForm=Fin 3 aux _ _
3 going go VERB VBG VerbForm=Ger 0 root _ _
4 out out ADV RB _ 3 advmod _ _
5 tonight tonight NOUN NN Number=Sing 3 nmod:tmod _ _
6 to to PART TO _ 8 mark _ _
7 get get VERB VB VerbForm=Inf 8 aux _ _
8 wasted wasted ADJ JJ Degree=Pos 3 xcomp _ _
9 if if SCONJ IN _ 12 mark _ _
10 anyone anyone NOUN NN Number=Sing 12 nsubj _ _
11 is be VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 12 cop _ _
12 interested interested ADJ JJ Degree=Pos 3 advcl _ SpaceAfter=No
13 . . PUNCT . _ 3 punct _ _
Treebank Statistics (UD_English-ESL)
This relation is universal.
5081 nodes (5%) are attached to their parents as mark.
5076 instances of mark (100%) are right-to-left (child precedes parent).
Average distance between parent and child is 2.26864790395591.