In this task, you are given a sentence from the research paper and the category to which it belongs. Your task is to classify whether the given category is correct or not by providing "True" and "False", respectively. Here are the definitions for the categories: Background (Why is this problem important? What relevant works have been created before? What is still missing in the previous works? What are the high-level research questions? How might this help other research or researchers?), Purpose (What specific things do the researchers want to do? What specific knowledge do the researchers want to gain? What specific hypothesis do the researchers want to test?), Method (How did the researchers do the work or find what they sought? What are the procedures and steps of the research?), or Finding (What did the researchers find out? Did the proposed methods work? Did the thing behave as the researchers expected?). ",

Sentence: Here , we use a mathematical model to link population fragmentation with the hypothesis of Zinkernagel. 
 Section: finding
True

Sentence: highly reproducible measure of the global TCR Vβ repertoire diversity among twenty Vβ families in human peripheral blood. 
 Section: purpose
True

Sentence: In this paper , we provide support from the literature to advance our hypothesis that one mechanism by which TNF-α can exert its paradoxical effects in the brain is via crosstalk with signaling pathways of growth factors or other cytokines. 
 Section: background

False