That would require someone who had access to the strain.
1	That	that	PRON	DT	Number=Sing|PronType=Dem	3	nsubj	3:nsubj	_
2	would	would	AUX	MD	VerbForm=Fin	3	aux	3:aux	_
3	require	require	VERB	VB	VerbForm=Inf	0	root	0:root	_
4	someone	someone	PRON	NN	Number=Sing|PronType=Ind	3	obj	3:obj|6:nsubj	_
5	who	who	PRON	WP	PronType=Rel	6	nsubj	4:ref	_
6	had	have	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	4	acl:relcl	4:acl:relcl	_
7	access	access	NOUN	NN	Number=Sing	6	obj	6:obj	_
8	to	to	ADP	IN	_	10	case	10:case	_
9	the	the	DET	DT	Definite=Def|PronType=Art	10	det	10:det	_
10	strain	strain	NOUN	NN	Number=Sing	7	nmod	7:nmod:to	SpaceAfter=No
11	.	.	PUNCT	.	_	3	punct	3:punct	_
