A second set of problems concerns the need to ensure that the economic system is perceived as fundamentally fair, which is the key to its political sustainability.
1	A	a	DET	RI	Definite=Ind|Number=Sing|PronType=Art	3	det	_	_
2	second	second	ADJ	NO	Degree=Pos|NumType=Ord	3	amod	_	_
3	set	set	NOUN	S	Number=Sing	6	nsubj	_	_
4	of	of	ADP	E	_	5	case	_	_
5	problems	problem	NOUN	S	Number=Plur	3	nmod	_	_
6	concerns	concern	VERB	V	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
7	the	the	DET	RD	Definite=Def|PronType=Art	8	det	_	_
8	need	need	NOUN	S	Number=Sing	6	obj	_	_
9	to	to	PART	PART	_	10	mark	_	_
10	ensure	ensure	VERB	V	VerbForm=Inf	8	acl	_	_
11	that	that	SCONJ	CS	_	16	mark	_	_
12	the	the	DET	RD	Definite=Def|PronType=Art	14	det	_	_
13	economic	economic	ADJ	A	Degree=Pos	14	amod	_	_
14	system	system	NOUN	S	Number=Sing	16	nsubj:pass	_	_
15	is	be	AUX	VA	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	16	aux:pass	_	_
16	perceived	perceive	VERB	V	Tense=Past|VerbForm=Part	10	ccomp	_	_
17	as	as	ADP	E	_	19	case	_	_
18	fundamentally	fundamentally	ADV	B	_	19	advmod	_	_
19	fair	fair	ADJ	A	Degree=Pos	16	obl	_	SpaceAfter=No
20	,	,	PUNCT	FF	_	16	punct	_	_
21	which	which	PRON	PR	PronType=Rel	24	nsubj	_	_
22	is	be	AUX	V	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	24	cop	_	_
23	the	the	DET	RD	Definite=Def|PronType=Art	24	det	_	_
24	key	key	NOUN	S	Number=Sing	16	advcl	_	_
25	to	to	ADP	E	_	28	case	_	_
26	its	its	DET	AP	Number=Sing|Poss=Yes|PronType=Prs	28	nmod:poss	_	_
27	political	politic	ADJ	A	Degree=Pos	28	amod	_	_
28	sustainability	sustainability	NOUN	S	Number=Sing	24	nmod	_	SpaceAfter=No
29	.	.	PUNCT	FS	_	6	punct	_	_
