Definition: 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: Objectives: 1) To compare the 2-year completed suicide and reattempt rates in a preintervention group of Hong Kong Chinese suicide attempters (aged 65 years and older) who received standard care and a postintervention group enrolled in a regional elderly suicide prevention program (ESPP) that adopts a two-tiered multifaceted care management model and 2) to examine the trend of suicide rates in older adults aged 65 years and older in the pre-and postintervention periods. Design: The first part is an observational cohort study with baseline, follow-up, and outcome data being identified from a clinical electronic registry. The second part examines changes in suicide rates from official mortality statistics. Setting: A government-funded suicide intervention program serving catchment population (852,796 people aged 65 years and older) in Hong Kong, China. Participants: Suicide attempters (aged 65 years and older) presenting to old-age psychiatric service in the pre-and postintervention phases. Measurements: 1) Two-year rates of completed suicide and suicide reattempt and 2) changes in population suicide rates in the pre-and postintervention periods. Results: The 2-year completed suicide rate was 7.58% in the preintervention group (N = 66) and 1.99% in the ESPP group (N = 351) χ 2 = 6.192; p value: 0.028; df = 1). Reattempt rates were not different. At a population level, suicide rate dropped significantly only in women aged 85 years and older, relative to the preintervention period. Conclusions: The ESPP was associated with a reduced rate of completed suicide in old-age suicide attempters and might have contributed to a fall of suicide rate in women aged 85 years and older. (Am J Geriatr Psychiatry 2011; 19:1-12) 
Output:
1 - purpose, 2 - method, 3 - method, 4 - method, 5 - method, 6 - method, 7 - method, 8 - finding, 9 - finding, 10 - finding, 11 - finding, 12 - finding, 13 - other