In this task, you are given a paragraph (from a research paper) and your task is to classify each sentence of the paragraph (assume n sentence) into the following categories: Background, Purpose, Method, Finding/Contribution, or Other. Return the output in this format: 1 - category of sentence 1, 2 - category of sentence 2, ..., n - category of sentence n; where each number indicates the order of the sentence. The categories can be identified using the following questions: 
 Background: - Why is this problem important? - What relevant works have been done before? - What did the previous works miss? - What are the high-level research questions? - How might this help other researchers?
 Purpose: - What specific things do the researchers want to do? - What specific knowledge do the researchers want to know? - What specific hypothesis do the researchers want to test?
 Method: - How did the researchers do it or find it out? - What are the procedures and steps of this research?
 Finding/Contribution: - What did the researchers find out? Did the proposed methods work? - Did things behave as the researchers expected?
Other: put every text fragment that does not fit into any of the categories above here. Put a sentence here if its not in English, is not part of the article, contains numbers and dates, is a caption of a figure or a table, is a formatting error, or you are not sure about it.

Input: Consider Input: Correspondence to: Prof. M. Ackermann, Institut •r Virologic, Vet.-med. Fakult~it, Universit~it Ziirich, Winterthurerstr. 266a, CH-8057 Ziirich, Switzerland. ~Present address:

Output: 1 - other, 2 - other, 3 - other, 4 - other, 5 - other


Input: Consider Input: Homogenates obtained by a Dounce homogeniser of oligodendrocyte and whole brain from 2-day-old rats were suspended in Published by Elsevier Science Publishers B. V.

Output: 1 - method


Input: Consider Input: WIDER IMPLICATIONS: This is the first comprehensive review of rodent models of both infectious and autoimmune disease of testis/ epididymis, and their clinical implications, i.e. their importance in understanding male infertility related to infectious and non-infectious/ autoimmune disease of the reproductive organs.


Output: 1 - finding, 2 - finding