In this task, you are given a sentence. You are expected to write the name of the organism substances in the body mentioned in the input. Although there might be several correct answers, you need to write one of them.

Input: Consider Input:  A 20 - mul aliquot of the supernatant was added to 12 . 5 mul of assay buffer ( 20 mm ATP , 40 mm MgCl2 , 0 . 4 m Tris - Cl , pH 7 . 8 ) .

Output: supernatant


Input: Consider Input:  Differences between pigs of the innervated and denervated groups were not apparent , with respect to blood flow to any other region ( caudate region , brain stem , cerebellum ) .

Output: blood


Input: Consider Input:  Plasma from 182 patients with different malignant diseases was tested for riboflavin binding by immunoglobulins , which have been recently identified as major carriers of this micronutrient .


Output: Plasma