Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Clinical immunology is the study of diseases caused by disorders of the immune system (failure, aberrant action, and malignant growth of the cellular elements of the system). It also involves diseases of other systems, where immune reactions play a part in the pathology and clinical features.
What are three problems of the immune system studied by clinical immunology?
A: failure, aberrant action, and malignant growth

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The first successful light bulb filaments were made of carbon (from carbonized paper or bamboo). Early carbon filaments had a negative temperature coefficient of resistance — as they got hotter, their electrical resistance decreased. This made the lamp sensitive to fluctuations in the power supply, since a small increase of voltage would cause the filament to heat up, reducing its resistance and causing it to draw even more power and heat even further. In the "flashing" process, carbon filaments were heated by current passing through them while in an evacuated vessel containing hydrocarbon vapor (usually gasoline). The carbon deposited on the filament by this treatment improved the uniformity and strength of filaments as well as their efficiency. A metallized or "graphitized" filament was first heated in a high-temperature oven before flashing and lamp assembly. This transformed the carbon into graphite which further strengthened and smoothed the filament. This also changed the filament to have a positive temperature coefficient, like a metallic conductor, and helped stabilize the lamp's power consumption, temperature and light output against minor variations in supply voltage.
What were negative effects of the flashing process?
A: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Iranian scientists outside Iran have also made some major contributions to science. In 1960, Ali Javan co-invented the first gas laser, and fuzzy set theory was introduced by Lotfi Zadeh. Iranian cardiologist, Tofy Mussivand invented and developed the first artificial cardiac pump, the precursor of the artificial heart. Furthering research and treatment of diabetes, HbA1c was discovered by Samuel Rahbar. Iranian physics is especially strong in string theory, with many papers being published in Iran. Iranian-American string theorist Kamran Vafa proposed the Vafa-Witten theorem together with Edward Witten. In August 2014, Maryam Mirzakhani became the first-ever woman, as well as the first-ever Iranian, to receive the Fields Medal, the highest prize in mathematics.
Which Iranian cardiologist developed and invented the first artificial cardiac pump?
A: Tofy Mussivand

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Westminster Abbey is a collegiate church governed by the Dean and Chapter of Westminster, as established by Royal charter of Queen Elizabeth I in 1560, which created it as the Collegiate Church of St Peter Westminster and a Royal Peculiar under the personal jurisdiction of the Sovereign. The members of the Chapter are the Dean and four canons residentiary, assisted by the Receiver General and Chapter Clerk. One of the canons is also Rector of St Margaret's Church, Westminster, and often holds also the post of Chaplain to the Speaker of the House of Commons.
Who rejects the chapter of Westminster?
A:
unanswerable