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.

PLOS Neglected Tropical Diseases, caused by the filarial parasitic nematode Onchocerca volvulus, remains a significant source of morbidity throughout sub-Saharan Africa and is a primary cause of infectious blindness. Research on this disease has been hindered by an absence of suitable small animal hosts. Here we describe the development of humanized mouse models that are susceptible to O. volvulus infection supporting both growth and maturation of the parasite. These novel mouse models have enabled the identification of a number of new O. volvulus biomarkers with potential to play a role in the development of specific and sensitive diagnostic tests for presence of viable parasites. Development of Onchocerca volvulus in NSG mice PLOS Neglected Tropical Diseases
1 - finding, 2 - finding, 3 - finding, 4 - finding, 5 - finding, 6 - finding, 7 - finding

Citation Stenglein MD, et al. 2012. Identification, characterization, and in vitro culture of highly divergent arenaviruses from boa constrictors and annulated tree boas: candidate etiological agents for snake inclusion body disease. mBio 3(4):e00180-12.
1 - finding, 2 - finding, 3 - other

Conclusion: S. pneumoniae-induced IL-8 expression by human epithelial BEAS-2B cells depended on activation of JNK and recruitment of phosphorylated c-Jun to the il8 promoter.

1 - finding