def make_sample_id(gloss_id, lang1, lang2, index1, index2):
	"""
	Sample IDs should uniquely identify a feature row.
	Sample sample ID: 98/English,German/1,1
	"""
	assert lang1 < lang2
	s  = str(gloss_id) + '/'
	s += lang1 +','+ lang2 + '/'
	s += str(index1) +','+ str(index2)
	return s