Given a passage classify if the passage has a definite objective/aim/goal or not. Output '1' if the passage has a defininte objective/aim/goal and output '0' if the passage does not have a definite objective/aim/goal.
One example: Chronic rhinosinusitis (CRS) is a heterogeneous disease with an uncertain pathogenesis. Group 2 innate lymphoid cells (ILC2s) represent a recently discovered cell population which has been implicated in driving Th2 inflammation in CRS; however, their relationship with clinical disease characteristics has yet to be investigated. The aim of this study was to identify ILC2s in sinus mucosa in patients with CRS and controls and compare ILC2s across characteristics of disease. A cross-sectional study of patients with CRS undergoing endoscopic sinus surgery was conducted. Sinus mucosal biopsies were obtained during surgery and control tissue from patients undergoing pituitary tumour resection through transphenoidal approach. ILC2s were identified as CD45(+) Lin(-) CD127(+) CD4(-) CD8(-) CRTH2(CD294)(+) CD161(+) cells in single cell suspensions through flow cytometry. ILC2 frequencies, measured as a percentage of CD45(+) cells, were compared across CRS phenotype, endotype, inflammatory CRS subtype and other disease characteristics including blood eosinophils, serum IgE, asthma status and nasal symptom score. 35 patients (40% female, age 48 17 years) including 13 with eosinophilic CRS (eCRS), 13 with non-eCRS and 9 controls were recruited. ILC2 frequencies were associated with the presence of nasal polyps (P = 0.002) as well as high tissue eosinophilia (P = 0.004) and eosinophil-dominant CRS (P = 0.001) (Mann-Whitney U). They were also associated with increased blood eosinophilia (P = 0.005). There were no significant associations found between ILC2s and serum total IgE and allergic disease. In the CRS with nasal polyps (CRSwNP) population, ILC2s were increased in patients with co-existing asthma (P = 0.03). ILC2s were also correlated with worsening nasal symptom score in CRS (P = 0.04).
Solution is here: 1
Explanation: There is a line in the passage which say 'The aim of this study was...' which suggests that it is talking about a specific aim. Hence, the output should be 1 as this passage has a definite aim.

Now, solve this: Before guidelines were issued, many patients with hepatitis B flare and hepatic decompensation had discontinued lamivudine therapy instead of indefinite therapy. We investigated their outcomes.', 'We performed a retrospective cohort study of 263 consecutive patients with chronic hepatitis B (94 with cirrhosis) who recovered from a flare of hepatitis with hepatic decompensation and were followed after cessation of lamivudine therapy. Clinical events that occurred during the follow-up period were assessed by chart review and analysis of results from retrospective assays.', 'The mean duration of lamivudine therapy was 12.1 8.6 months; data were collected from patients for 89.1 38.7 months after therapy ended. In the first year off therapy, 29.9% of patients had clinical relapse, 16.2% had hepatitis flares, and 8.2% had hepatic decompensation. There was no significant difference in the incidence of hepatic decompensation between patients with and without cirrhosis. Hepatocellular carcinoma developed in 14 patients 20-109 months after cessation of therapy, with 5-year cumulative incidence of 5.2% in patients with cirrhosis. Three patients with cirrhosis died of hepatic decompensation 38-76 months after cessation of therapy (5-year cumulative mortality, 2.9%). Multivariate analyses showed that men were more likely than women to have recurrence of hepatic decompensation (hazard ratio [HR], 4.339; P = .014). Liver cirrhosis (HR, 2.766; P = .041) and age (HR, 1.054; P = .023) increased risk for hepatocellular carcinoma.
Solution:
1