Given a question and a context passage, generate the answer having the word or phrase from the context passage. Here, the answer should be a shortest continous span from the passage.
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Question: Context: In order to determine the prevalence of latent infection due to Mycobacterium tuberculosis in drug users and to provide centres for drug users with a practical tool for tuberculosis screening, 237 drug users were subjected to the Monotest and, for reference purposes, to the Mantoux test. The overall prevalence of subjects with a tuberculin skin reaction size > or = 5 mm in the Mantoux test was 25.7%; utilizing a cut-off of > or = 10 mm, the prevalence was 11.4%. Irrespective of cut-off, the Monotest showed a sensitivity of > 90% and a specificity of > 80%. At a prevalence of 25.7%, and with cut-offs of > or = 5 or > or = 10 mm, the positive predictive value was 83% or 62.2%, respectively. Irrespective of cut-off, the negative predictive value was > 97%. In conclusion, the Monotest proved satisfactory as a tool for epidemiological screening in a population with a high prevalence for latent tuberculosis, namely drug users. 
 Question: The Mantoux test detects what latent infection/disease?

Answer: tuberculosis


Question: Context: Hoping to snap a three-game losing streak, the Chiefs went home for a Week 12 Sunday night duel with the Pittsburgh Steelers. Kansas City delivered the game's first punch in the opening quarter with a 41-yard field goal from kicker Ryan Succop. The Steelers would answer in the second quarter with kicker Shaun Suisham getting a 21-yard field goal, followed by quarterback Ben Roethlisberger completing a 2-yard touchdown pass to tight end Weslye Saunders. The Chiefs would reply with a 49-yard field goal from Succop, but Pittsburgh would close out the half with Suisham booting a 49-yard field goal. After a scoreless third quarter, Kansas City began to chip away at their deficit in the fourth quarter with a 40-yard field goal from Succop. However, the Steelers' defense held on to preserve the win. 
 Question: What was able to save the win for the Steelers'?

Answer: defense held on


Question: Context: China Daily, the national English-language newspaper of China, keeps you in touch with China and the world with our mobile solutions. Now anyone can read our exclusive reports anywhere. Download your favorites! China Daily iPaper Want to read China Daily with your iPhone or iPad? Then look no further than China Daily iPaper. With China Daily iPaper, all sections are presented as full-content digital replicas , in their original layout . The application is free, and you can download your favourite news reports wherever you are. China Daily Digest Since the China Daily Digest application is now available on the iPad App Store, iPad users can read and download China Daily Digest's in-depth news reports, website exclusives and analysis , which will give you unique views on China's economy, society and culture. China Daily News A bridge connecting China and the world, the China Daily iPhone application lets you get the latest information and photos of China wherever you go. Specifically designed to use the characteristics and navigation of the iPhone, this application downloads the latest news of China directly to the device. China Daily Video China Daily Video iPhone application is a window to China, letting you get video products covering all of China's cultural heritages , natural wonders, interviews with famous people and major news events. 
 Question: What can we read in all of the four digital products?

Answer:
news reports.