He estimated that there should be around 45 particles, but this number is very uncertain — I wouldn't be surprised if it is quite different from that.
1	He	he	PRON	PRP	Case=Nom|Gender=Masc|Number=Sing|Person=3|PronType=Prs	2	nsubj	2:nsubj	Discourse=attribution-positive:109->110:0|Entity=(107-abstract-giv:inact-cf5-2,16-disc(119-person-giv:act-cf1*-1-ana)
2	estimated	estimate	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	0	root	0:root	_
3	that	that	SCONJ	IN	_	6	mark	6:mark	Discourse=adversative-contrast_m:110->95:0
4	there	there	PRON	EX	PronType=Dem	6	expl	6:expl	_
5	should	should	AUX	MD	Number=Plur|Person=3|VerbForm=Fin	6	aux	6:aux	_
6	be	be	VERB	VB	VerbForm=Inf	2	ccomp	2:ccomp	_
7	around	around	ADV	RB	Degree=Pos	8	advmod	8:advmod	Entity=(124-object-new-cf3-3-coref
8	45	45	NUM	CD	NumForm=Digit|NumType=Card	9	nummod	9:nummod	_
9	particles	particle	NOUN	NNS	Number=Plur	6	nsubj	6:nsubj	Entity=124)|SpaceAfter=No
10	,	,	PUNCT	,	_	16	punct	16:punct	_
11	but	but	CCONJ	CC	_	16	cc	16:cc	Discourse=adversative-concession:111->110:3
12	this	this	DET	DT	Number=Sing|PronType=Dem	13	det	13:det	Entity=(125-abstract-new-cf2-2-coref
13	number	number	NOUN	NN	Number=Sing	16	nsubj	16:nsubj	Entity=125)
14	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	16	cop	16:cop	_
15	very	very	ADV	RB	_	16	advmod	16:advmod	_
16	uncertain	uncertain	ADJ	JJ	Degree=Pos|Polarity=Neg	2	conj	2:conj:but	_
17	—	—	PUNCT	:	_	22	punct	22:punct	Discourse=attribution-positive:112->113:0
18	I	I	PRON	PRP	Case=Nom|Number=Sing|Person=1|PronType=Prs	22	nsubj:pass	22:nsubj:pass	Entity=(4-person-giv:inact-cf4-1-ana)
19-20	wouldn't	_	_	_	_	_	_	_	_
19	would	would	AUX	MD	VerbForm=Fin	22	aux	22:aux	_
20	n't	not	PART	RB	Polarity=Neg	22	advmod	22:advmod	_
21	be	be	AUX	VB	VerbForm=Inf	22	aux:pass	22:aux:pass	_
22	surprised	surprise	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	2	parataxis	2:parataxis	_
23	if	if	SCONJ	IN	_	27	mark	27:mark	Discourse=evaluation-comment:113->111:0
24	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	27	nsubj	27:nsubj	Entity=(125-abstract-giv:act-cf2-1-ana)
25	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	27	cop	27:cop	_
26	quite	quite	ADV	RB	_	27	advmod	27:advmod	_
27	different	different	ADJ	JJ	Degree=Pos	22	advcl	22:advcl:if	_
28	from	from	ADP	IN	_	29	case	29:case	_
29	that	that	PRON	DT	Number=Sing|PronType=Dem	27	obl	27:obl:from	Entity=(124-object-giv:act-cf3-1-ana)|SpaceAfter=No
30	.	.	PUNCT	.	_	2	punct	2:punct	Entity=107)
