There've been three other managers since then.
1	There	there	PRON	EX	_	3	expl	_	SpaceAfter=No
2	've	have	AUX	PRES-AUX	Mood=Ind|Tense=Pres|VerbForm=Fin	3	aux	_	_
3	been	be	AUX	PERF	Tense=Past|VerbForm=Part	0	root	_	_
4	three	three	NUM	CARD-PL	NumType=Card	6	nummod	_	_
5	other	other	ADJ	POS	Degree=Pos	6	amod	_	_
6	managers	manager	NOUN	PL-NOM	Number=Plur	3	nsubj	_	_
7	since	since	SCONJ	_	_	8	mark	_	_
8	then	then	ADV	_	PronType=Dem	3	advmod	_	SpaceAfter=No
9	.	.	PUNCT	Period	_	3	punct	_	_
