The team used Formica fusca, an ant species that can form thousand-strong colonies.
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	2:det	Discourse=context-background:17->24:5|Entity=(18-person-giv:inact-cf1-2-coref
2	team	team	NOUN	NN	Number=Sing	3	nsubj	3:nsubj	Entity=18)
3	used	use	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	0	root	0:root	_
4	Formica	Formica	X	FW	_	5	compound	5:compound	Entity=(22-animal-new-cf4-2-sgl|XML=<hi rend:::"italic"><ref>
5	fusca	fusca	X	FW	_	3	obj	3:obj	Entity=22)|SpaceAfter=No|XML=</ref></hi>
6	,	,	PUNCT	,	_	9	punct	9:punct	_
7	an	a	DET	DT	Definite=Ind|PronType=Art	9	det	9:det	Entity=(6-animal-giv:inact-cf2-3-coref
8	ant	ant	NOUN	NN	Number=Sing	9	compound	9:compound	XML=<ref></ref>
9	species	species	NOUN	NN	Number=Sing	5	appos	5:appos|12:nsubj	_
10	that	that	PRON	WDT	PronType=Rel	12	nsubj	9:ref	Discourse=elaboration-attribute:18->17:0
11	can	can	AUX	MD	VerbForm=Fin	12	aux	12:aux	_
12	form	form	VERB	VB	VerbForm=Inf	9	acl:relcl	9:acl:relcl	_
13	thousand	thousand	NUM	CD	NumForm=Word|NumType=Card	15	compound	15:compound	Entity=(23-organization-new-cf3-4-sgl|SpaceAfter=No|XML=<w>
14	-	-	PUNCT	HYPH	_	13	punct	13:punct	SpaceAfter=No
15	strong	strong	ADJ	JJ	Degree=Pos	16	amod	16:amod	XML=</w>
16	colonies	colony	NOUN	NNS	Number=Plur	12	obj	12:obj	Entity=23)6)|SpaceAfter=No
17	.	.	PUNCT	.	_	3	punct	3:punct	_
