This implies knowledge on his part; he knows beforehand that this chronicler exists.
1	This	this	PRON	DEM-SG	Number=Sing|PronType=Dem	2	nsubj	_	_
2	implies	implies	VERB	PRES	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	knowledge	knowledge	NOUN	SG-NOM	Number=Sing	2	obj	_	_
4	on	on	ADP	_	_	6	case	_	_
5	his	he	PRON	P3SG-GEN	Gender=Masc|Number=Sing|Person=3|Poss=Yes|PronType=Prs	6	nmod:poss	_	_
6	part	part	NOUN	SG-NOM	Number=Sing	3	nmod	_	SpaceAfter=No
7	;	;	PUNCT	SemiColon	_	9	punct	_	_
8	he	he	PRON	PERS-P3SG-NOM	Case=Nom|Gender=Masc|Number=Sing|Person=3|PronType=Prs	9	nsubj	_	_
9	knows	know	VERB	PRES	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	2	advcl	_	_
10	beforehand	beforehand	ADV	_	_	9	advmod	_	_
11	that	that	SCONJ	_	_	14	mark	_	_
12	this	this	DET	DEM-SG	Number=Sing|PronType=Dem	13	det	_	_
13	chronicler	chronicler	NOUN	SG-NOM	Number=Sing	14	nsubj	_	_
14	exists	exist	VERB	PRES	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	9	ccomp	_	SpaceAfter=No
15	.	.	PUNCT	Period	_	14	punct	_	_
