This is an aught.
1	This	this	PRON	DT	Number=Sing|PronType=Dem	4	nsubj	4:nsubj	Discourse=joint-other_m:227->226:0|Entity=(109-object-new-cf1-1-cata)
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	cop	4:cop	_
3	an	a	DET	DT	Definite=Ind|PronType=Art	4	det	4:det	Entity=(109-object-acc:com-cf1-2-coref
4	aught	aught	NOUN	NN	Number=Sing	0	root	0:root	Entity=109)|SpaceAfter=No
5	.	.	PUNCT	.	_	4	punct	4:punct	_
