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.

Ex Input:
Neural network analysis of spectroscopic data of lycopene and beta - carotene content in food samples compared to HPLC - UV - vis .

Ex Output:
samples

Ex Input:
The use of these biological samples was approved by local ethical committee .

Ex Output:
samples

Ex Input:
Acute attack treatment : there is no specific problem for the use of C1inh concentrate , tranexamic acid , icatibant ; or ecallantide in female patients .

Ex Output:
concentrate