Incidentally, there are twenty columns, and these are reflected in the pool in front, which might also account for its name.
1	Incidentally	incidentally	ADV	RB	Degree=Pos	4	advmod	4:advmod	Discourse=adversative-contrast_m:117->115:1|SpaceAfter=No
2	,	,	PUNCT	,	_	1	punct	1:punct	_
3	there	there	PRON	EX	PronType=Dem	4	expl	4:expl	_
4	are	be	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	0:root	_
5	twenty	twenty	NUM	CD	NumForm=Word|NumType=Card	6	nummod	6:nummod	Entity=(159-object-giv:act-cf1*-2-coref
6	columns	column	NOUN	NNS	Number=Plur	4	nsubj	4:nsubj	Entity=159)|SpaceAfter=No
7	,	,	PUNCT	,	_	11	punct	11:punct	_
8	and	and	CCONJ	CC	_	11	cc	11:cc	Discourse=joint-list_m:118->117:0
9	these	this	PRON	DT	Number=Plur|PronType=Dem	11	nsubj:pass	11:nsubj:pass	Entity=(159-object-giv:act-cf1*-1-ana)
10	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	11	aux:pass	11:aux:pass	_
11	reflected	reflect	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	4	conj	4:conj:and|21:csubj	_
12	in	in	ADP	IN	_	14	case	14:case	_
13	the	the	DET	DT	Definite=Def|PronType=Art	14	det	14:det	Entity=(162-place-new-cf3-2-sgl
14	pool	pool	NOUN	NN	Number=Sing	11	obl	11:obl:in	_
15	in	in	ADP	IN	_	16	case	16:case	_
16	front	front	NOUN	NN	Number=Sing	14	nmod	14:nmod:in	Entity=162)|SpaceAfter=No
17	,	,	PUNCT	,	_	21	punct	21:punct	_
18	which	which	PRON	WDT	PronType=Rel	21	nsubj	11:ref|21:nsubj	Discourse=evaluation-comment:119->117:1
19	might	might	AUX	MD	VerbForm=Fin	21	aux	21:aux	_
20	also	also	ADV	RB	_	21	advmod	21:advmod	_
21	account	account	VERB	VB	VerbForm=Inf	11	advcl:relcl	11:advcl:relcl	_
22	for	for	ADP	IN	_	24	case	24:case	_
23	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	24	nmod:poss	24:nmod:poss	Entity=(163-abstract-new-cf4-2-sgl(131-place-giv:act-cf2-1-ana-Chehel_Sotoun)
24	name	name	NOUN	NN	Number=Sing	21	obl	21:obl:for	Entity=163)|SpaceAfter=No
25	.	.	PUNCT	.	_	4	punct	4:punct	_
