The up-river stations had to be relieved.
1	The	the	DET	DEF	Definite=Def|PronType=Art	3	det	_	_
2	up-river	up-river	NOUN	SG-NOM	Number=Sing	3	compound	_	_
3	stations	station	NOUN	PL-NOM	Number=Plur	7	nsubj:pass	_	_
4	had	have	AUX	PAST-AUX	Mood=Ind|Tense=Past|VerbForm=Fin	7	aux	_	_
5	to	to	PART	_	_	7	mark	_	_
6	be	be	AUX	INF-AUX	VerbForm=Inf	7	aux:pass	_	_
7	relieved	relieve	VERB	PASS	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	SpaceAfter=No
8	.	.	PUNCT	Period	_	7	punct	_	_
