Emails from Zawahiri to Atef in the Spring of 1999 indicate that Ayman was a close student of the USAMRIID anthrax program.
1	Emails	email	NOUN	NNS	Number=Plur	11	nsubj	11:nsubj	_
2	from	from	ADP	IN	_	3	case	3:case	_
3	Zawahiri	Zawahiri	PROPN	NNP	Number=Sing	1	nmod	1:nmod:from	_
4	to	to	ADP	IN	_	5	case	5:case	_
5	Atef	Atef	PROPN	NNP	Number=Sing	1	nmod	1:nmod:to	_
6	in	in	ADP	IN	_	8	case	8:case	_
7	the	the	DET	DT	Definite=Def|PronType=Art	8	det	8:det	_
8	Spring	spring	NOUN	NN	Number=Sing	1	nmod	1:nmod:in	_
9	of	of	ADP	IN	_	10	case	10:case	_
10	1999	1999	NUM	CD	NumForm=Digit|NumType=Card	8	nmod	8:nmod:of	_
11	indicate	indicate	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	0:root	_
12	that	that	SCONJ	IN	_	17	mark	17:mark	_
13	Ayman	Ayman	PROPN	NNP	Number=Sing	17	nsubj	17:nsubj	_
14	was	be	AUX	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	17	cop	17:cop	_
15	a	a	DET	DT	Definite=Ind|PronType=Art	17	det	17:det	_
16	close	close	ADJ	JJ	Degree=Pos	17	amod	17:amod	_
17	student	student	NOUN	NN	Number=Sing	11	ccomp	11:ccomp	_
18	of	of	ADP	IN	_	22	case	22:case	_
19	the	the	DET	DT	Definite=Def|PronType=Art	22	det	22:det	_
20	USAMRIID	USAMRIID	PROPN	NNP	Number=Sing	22	compound	22:compound	_
21	anthrax	anthrax	NOUN	NN	Number=Sing	22	compound	22:compound	_
22	program	program	NOUN	NN	Number=Sing	17	nmod	17:nmod:of	SpaceAfter=No
23	.	.	PUNCT	.	_	11	punct	11:punct	_
