Again, XML tags are case-sensitive.
1	Again	again	ADV	_	_	6	advmod	_	SpaceAfter=No
2	,	,	PUNCT	Comma	_	1	punct	_	_
3	XML	XML	PROPN	SG-NOM	Number=Sing	4	compound	_	_
4	tags	tag	NOUN	PL-NOM	Number=Plur	6	nsubj	_	_
5	are	be	AUX	PRES	Mood=Ind|Tense=Pres|VerbForm=Fin	6	cop	_	_
6	case-sensitive	case-sensitive	ADJ	POS	Degree=Pos	0	root	_	SpaceAfter=No
7	.	.	PUNCT	Period	_	6	punct	_	_
