Type	BLAST search result		BSR (BLAST Score Ratio)
	Arabidopsis -> each plant	each plant -> Arabidopsis
Ia	top-hit	top-hit	>=0.4
Ib	top-hit	top-hit	<0.4
II	top-hit	non top-hit	>=0.4
	non top-hit	top-hit
III	non top-hit	non top-hit	>=0.4