Keepers guard the goal posts at each end and attempt to block chasers' attempts at scoring.
1	Keepers	keeper	NOUN	NNS	Number=Plur	2	nsubj	2:nsubj|10:nsubj|12:nsubj:xsubj	Bridge=39<52|Discourse=joint-other_m:42->33:2|Entity=(52-person-acc:inf-cf4-1-sgl)
2	guard	guard	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	0:root	_
3	the	the	DET	DT	Definite=Def|PronType=Art	5	det	5:det	Entity=(42-object-giv:inact-cf1-3-coref
4	goal	goal	NOUN	NN	Number=Sing	5	compound	5:compound	_
5	posts	post	NOUN	NNS	Number=Plur	2	obj	2:obj	_
6	at	at	ADP	IN	_	8	case	8:case	_
7	each	each	DET	DT	PronType=Tot	8	det	8:det	Entity=(37-place-giv:inact-cf3-2-coref
8	end	end	NOUN	NN	Number=Sing	5	nmod	5:nmod:at	Entity=37)42)
9	and	and	CCONJ	CC	_	10	cc	10:cc	Discourse=joint-list_m:43->42:0
10	attempt	attempt	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	2	conj	2:conj:and	_
11	to	to	PART	TO	_	12	mark	12:mark	_
12	block	block	VERB	VB	VerbForm=Inf	10	xcomp	10:xcomp	_
13-14	chasers'	_	_	_	_	_	_	_	_
13	chasers	chaser	NOUN	NNS	Number=Plur	15	nmod:poss	15:nmod:poss	Entity=(53-event-new-cf5-3-sgl(40-person-giv:inact-cf2-1-coref
14	'	's	PART	POS	_	13	case	13:case	Entity=40)
15	attempts	attempt	NOUN	NNS	Number=Plur	12	obj	12:obj	_
16	at	at	SCONJ	IN	_	17	mark	17:mark	Discourse=elaboration-attribute:44->43:0
17	scoring	score	VERB	VBG	VerbForm=Ger	15	acl	15:acl:at	Entity=53)|SpaceAfter=No
18	.	.	PUNCT	.	_	2	punct	2:punct	_
