This difference is mainly due to the following:
1	This	this	DET	DT	Number=Sing|PronType=Dem	2	det	2:det	_
2	difference	difference	NOUN	NN	Number=Sing	7	nsubj	7:nsubj	_
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	7	cop	7:cop	_
4	mainly	mainly	ADV	RB	_	7	advmod	7:advmod	_
5	due	due	ADP	IN	_	7	case	7:case	_
6	to	to	ADP	IN	_	5	fixed	5:fixed	_
7	the	the	DET	DT	Definite=Def|PronType=Art	0	root	0:root	_
8	following	follow	VERB	VBG	VerbForm=Ger	7	amod	7:amod	SpaceAfter=No
9	:	:	PUNCT	:	_	7	punct	7:punct	_
