When you read the label its easy to understand why.
1	When	when	ADV	WRB	PronType=Int	3	advmod	3:advmod	_
2	you	you	PRON	PRP	Case=Nom|Person=2|PronType=Prs	3	nsubj	3:nsubj	_
3	read	read	VERB	VBP	Mood=Ind|Number=Sing|Person=2|Tense=Pres|VerbForm=Fin	8	advcl	8:advcl:when	_
4	the	the	DET	DT	Definite=Def|PronType=Art	5	det	5:det	_
5	label	label	NOUN	NN	Number=Sing	3	obj	3:obj	_
6-7	its	_	_	_	_	_	_	_	_
6	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	8	expl	8:expl	_
7	s	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	8	cop	8:cop	_
8	easy	easy	ADJ	JJ	Degree=Pos	0	root	0:root	_
9	to	to	PART	TO	_	10	mark	10:mark	_
10	understand	understand	VERB	VB	VerbForm=Inf	8	csubj	8:csubj	_
11	why	why	ADV	WRB	PronType=Int	10	advmod	10:advmod	SpaceAfter=No
12	.	.	PUNCT	.	_	8	punct	8:punct	_
