We have GIS ids, and Eid (external id - just like GIS id).
1	We	we	PRON	PRP	Case=Nom|Number=Plur|Person=1|PronType=Prs	2	nsubj	2:nsubj	_
2	have	have	VERB	VBP	Mood=Ind|Number=Plur|Person=1|Tense=Pres|VerbForm=Fin	0	root	0:root	_
3	GIS	GIS	NOUN	NN	Number=Sing	4	compound	4:compound	_
4	ids	id	NOUN	NNS	Number=Plur	2	obj	2:obj	SpaceAfter=No
5	,	,	PUNCT	,	_	7	punct	7:punct	_
6	and	and	CCONJ	CC	_	7	cc	7:cc	_
7	Eid	Eid	NOUN	NN	Number=Sing	4	conj	2:obj|4:conj:and	_
8	(	(	PUNCT	-LRB-	_	10	punct	10:punct	SpaceAfter=No
9	external	external	ADJ	JJ	Degree=Pos	10	amod	10:amod	_
10	id	id	NOUN	NN	Number=Sing	7	appos	7:appos	_
11	-	-	PUNCT	,	_	10	punct	10:punct	_
12	just	just	ADV	RB	_	15	advmod	15:advmod	_
13	like	like	ADP	IN	_	15	case	15:case	_
14	GIS	GIS	NOUN	NN	Number=Sing	15	compound	15:compound	_
15	id	id	NOUN	NN	Number=Sing	10	appos	10:appos	SpaceAfter=No
16	)	)	PUNCT	-RRB-	_	10	punct	10:punct	SpaceAfter=No
17	.	.	PUNCT	.	_	2	punct	2:punct	_
