The CIA has known of Zawahiri's plans to use anthrax for a half decade.
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	2:det	_
2	CIA	CIA	PROPN	NNP	Number=Sing	4	nsubj	4:nsubj	_
3	has	have	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	aux	4:aux	_
4	known	know	VERB	VBN	Tense=Past|VerbForm=Part	0	root	0:root	_
5	of	of	ADP	IN	_	8	case	8:case	_
6-7	Zawahiri's	_	_	_	_	_	_	_	_
6	Zawahiri	Zawahiri	PROPN	NNP	Number=Sing	8	nmod:poss	8:nmod:poss	_
7	's	's	PART	POS	_	6	case	6:case	_
8	plans	plan	NOUN	NNS	Number=Plur	4	obl	4:obl:of	_
9	to	to	PART	TO	_	10	mark	10:mark	_
10	use	use	VERB	VB	VerbForm=Inf	8	acl	8:acl:to	_
11	anthrax	anthrax	NOUN	NN	Number=Sing	10	obj	10:obj	_
12	for	for	ADP	IN	_	15	case	15:case	_
13	a	a	DET	DT	Definite=Ind|PronType=Art	15	det	15:det	_
14	half	half	ADJ	JJ	Degree=Pos|NumForm=Word|NumType=Frac	15	amod	15:amod	_
15	decade	decade	NOUN	NN	Number=Sing	4	obl	4:obl:for	SpaceAfter=No
16	.	.	PUNCT	.	_	4	punct	4:punct	_
