This interesting combination of findings – expected hierarchy of difficulty, but differing age of acquisition – is an important addition to our growing cross-linguistic knowledge of SI and could be the result of language-specific differences in the use of SI lexical items or methodological differences.
1	This	this	DET	DT	Number=Sing|PronType=Dem	3	det	3:det	Discourse=evaluation-comment:90->85:2|Entity=(144-abstract-new-cf1-3-coref
2	interesting	interesting	ADJ	JJ	Degree=Pos	3	amod	3:amod	_
3	combination	combination	NOUN	NN	Number=Sing	21	nsubj	21:nsubj|33:nsubj	_
4	of	of	ADP	IN	_	5	case	5:case	_
5	findings	finding	NOUN	NNS	Number=Plur	3	nmod	3:nmod:of	Entity=144)
6	–	-	PUNCT	:	_	8	punct	8:punct	Discourse=restatement-partial:91->90:0
7	expected	expect	VERB	VBN	Tense=Past|VerbForm=Part	8	amod	8:amod	Entity=(144-abstract-giv:act-cf1-2,8-appos
8	hierarchy	hierarchy	NOUN	NN	Number=Sing	3	appos	3:appos	_
9	of	of	ADP	IN	_	10	case	10:case	_
10	difficulty	difficulty	NOUN	NN	Number=Sing	8	nmod	8:nmod:of	Entity=(145-abstract-new-cf7-1-sgl)|SpaceAfter=No
11	,	,	PUNCT	,	_	14	punct	14:punct	_
12	but	but	CCONJ	CC	_	14	cc	14:cc	_
13	differing	differ	VERB	VBG	VerbForm=Ger	14	amod	14:amod	_
14	age	age	NOUN	NN	Number=Sing	8	conj	3:appos|8:conj:but	Entity=(146-abstract-new-cf8-1-sgl
15	of	of	ADP	IN	_	16	case	16:case	_
16	acquisition	acquisition	NOUN	NN	Number=Sing	14	nmod	14:nmod:of	Entity=(147-event-new-cf9-1-sgl)146)144)
17	–	-	PUNCT	:	_	3	punct	3:punct	_
18	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	21	cop	21:cop	Discourse=same-unit_m:92->90:1
19	an	a	DET	DT	Definite=Ind|PronType=Art	21	det	21:det	Entity=(144-abstract-giv:act-cf1-3-pred
20	important	important	ADJ	JJ	Degree=Pos	21	amod	21:amod	_
21	addition	addition	NOUN	NN	Number=Sing	0	root	0:root	_
22	to	to	ADP	IN	_	26	case	26:case	_
23	our	our	PRON	PRP$	Case=Gen|Number=Plur|Person=1|Poss=Yes|PronType=Prs	26	nmod:poss	26:nmod:poss	Entity=(148-abstract-new-cf10-4-sgl(149-person-acc:com-cf4-1-sgl)
24	growing	grow	VERB	VBG	VerbForm=Ger	26	amod	26:amod	_
25	cross-linguistic	cross-linguistic	ADJ	JJ	Degree=Pos	26	amod	26:amod	_
26	knowledge	knowledge	NOUN	NN	Number=Sing	21	nmod	21:nmod:to	_
27	of	of	ADP	IN	_	28	case	28:case	_
28	SI	SI	NOUN	NN	Number=Sing	26	nmod	26:nmod:of	Entity=(9-abstract-giv:act-cf2*-1-coref)148)144)
29	and	and	CCONJ	CC	_	33	cc	33:cc	Discourse=joint-list_m:93->90:2
30	could	could	AUX	MD	VerbForm=Fin	33	aux	33:aux	_
31	be	be	AUX	VB	VerbForm=Inf	33	cop	33:cop	_
32	the	the	DET	DT	Definite=Def|PronType=Art	33	det	33:det	Entity=(150-abstract-new-cf5-2-sgl
33	result	result	NOUN	NN	Number=Sing	21	conj	21:conj:and	_
34	of	of	ADP	IN	_	38	case	38:case	_
35	language	language	NOUN	NN	Number=Sing	37	compound	37:compound	Entity=(151-abstract-new-cf11-4-sgl|SpaceAfter=No|XML=<w>
36	-	-	PUNCT	HYPH	_	35	punct	35:punct	SpaceAfter=No
37	specific	specific	ADJ	JJ	Degree=Pos	38	amod	38:amod	XML=</w>
38	differences	difference	NOUN	NNS	Number=Plur	33	nmod	33:nmod:of	_
39	in	in	ADP	IN	_	41	case	41:case	_
40	the	the	DET	DT	Definite=Def|PronType=Art	41	det	41:det	Entity=(152-event-new-cf6-2-sgl
41	use	use	NOUN	NN	Number=Sing	38	nmod	38:nmod:in	_
42	of	of	ADP	IN	_	45	case	45:case	_
43	SI	SI	NOUN	NN	Number=Sing	44	compound	44:compound	Entity=(100-abstract-giv:inact-cf3-3-coref(153-abstract-new-cf13-1-sgl)
44	lexical	lexical	ADJ	JJ	Degree=Pos	45	amod	45:amod	_
45	items	item	NOUN	NNS	Number=Plur	41	nmod	41:nmod:of	Entity=100)152)151)
46	or	or	CCONJ	CC	_	48	cc	48:cc	_
47	methodological	methodological	ADJ	JJ	Degree=Pos	48	amod	48:amod	Entity=(154-abstract-new-cf12-2-sgl
48	differences	difference	NOUN	NNS	Number=Plur	38	conj	33:nmod:of|38:conj:or	Entity=154)150)|SpaceAfter=No
49	.	.	PUNCT	.	_	21	punct	21:punct	_
