user: Given the task definition, example input & output, solve the new input case.
Given a passage, construct a question on the basis of the information present in the passage. Construct the question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) it answer uses text phrases from the passage. Avoid creating questions that (i) can't be answered correctly without actually understanding the passage and (ii) uses the same words or phrases given in the passage.
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).
Output: Are group 2 innate lymphoid cells ( ILC2s ) increased in chronic rhinosinusitis with nasal polyps or eosinophilia?
The question is based on the following sentences from the passage (i) Group 2 innate lymphoid cells (ILC2s) {ii) In the CRS with nasal polyps (CRSwNP) population, ILC2s were increased in patients with co-existing asthma (iii) As ILC2s are elevated in patients with CRSwNP, they may drive nasal polyp formation in CRS. and (iv) They were also associated with increased blood eosinophilia

New input case for you: Decortication for thoracic empyema is associated with significant blood loss and prolonged postoperative air leak. We sought to assess the potential application of an irrigated-tip radiofrequency (RF) sealing device, in an attempt to reduce this morbidity.', "Data for all patients undergoing open decortication (OD) for stage II thoracic empyema, using either conventional approach or facilitated by use of the Aquamantys(®) device, at a single thoracic surgical unit between April 2010 and July 2014, were retrospectively analysed. Unpaired t-test and Fisher's exact test were used for statistical analysis.", 'Thirty-three patients, aged 54±15 years (mean ± SD), and with a Charlson comorbidity index of 2.5±1.9 were included. Preoperative and intraoperative characteristics, including surgical time, were similar in the conventional and Aquamantys(®) groups. Patients in the Aquamantys group were less likely to require red cell transfusion (9/22 vs. 10/11 patients, P=0.024) and received lower volume transfusions [0.0 (2.0) vs. 3.0 (1.6) units (median, IQR), P<0.0001]; chest drain duration was shorter [3.0 (1.0) vs. 6.5 (6.8) days, P=0.006], as was length of postoperative hospital stay [6.0 (8.7) vs. 10.0 (4.6) days, P=0.031]. There was no demonstrable difference in mortality.
Output:

assistant: Does the Aquamantys ( ® ) system improve haemostasis and pneumostasis in open decortication for thoracic empyema?