#SampleID	diet	before_after	sample_group	year
Sample1	control	before	cat1	1
Sample2	control	before	cat1	2
Sample3	fasting	after	cat2	3
Sample4	fasting	after	cat2	4
Sample5	standard		cat3	5
Sample6	standard		cat3	6
NotInOtuTable1			cat4	7
NotInOtuTable2			cat4	8