Problem: Please answer a question about the following article about Frederic Chopin:
Chopin's tombstone, featuring the muse of music, Euterpe, weeping over a broken lyre, was designed and sculpted by Clesinger. The expenses of the funeral and monument, amounting to 5,000 francs, were covered by Jane Stirling, who also paid for the return of the composer's sister Ludwika to Warsaw. Ludwika took Chopin's heart in an urn, preserved in alcohol, back to Poland in 1850.[n 9] She also took a collection of two hundred letters from Sand to Chopin; after 1851 these were returned to Sand, who seems to have destroyed them.
Chopin's sister Ludwika took his heart back to Warsaw preserved in what?
A: alcohol
Problem: Please answer a question about the following article about Cardinal (Catholicism):
In 1630, Pope Urban VIII decreed their title to be Eminence (previously, it had been "illustrissimo" and "reverendissimo") and decreed that their secular rank would equate to Prince, making them secondary only to the Pope and crowned monarchs.
What rank did the Eminece decree assigned?
A: Prince
Problem: Please answer a question about the following article about Tibet:
In 821/822 CE Tibet and China signed a peace treaty. A bilingual account of this treaty, including details of the borders between the two countries, is inscribed on a stone pillar which stands outside the Jokhang temple in Lhasa. Tibet continued as a Central Asian empire until the mid-9th century, when a civil war over succession led to the collapse of imperial Tibet. The period that followed is known traditionally as the Era of Fragmentation, when political control over Tibet became divided between regional warlords and tribes with no dominant centralized authority.
When did a civil war over succession lead to the collapse of imperial Tibet?
A: mid-9th century
Problem: Please answer a question about the following article about Hellenistic period:
Philip V, who came to power when Doson died in 221 BC, was the last Macedonian ruler with both the talent and the opportunity to unite Greece and preserve its independence against the "cloud rising in the west": the ever-increasing power of Rome. He was known as "the darling of Hellas". Under his auspices the Peace of Naupactus (217 BC) brought the latest war between Macedon and the Greek leagues (the social war 220-217) to an end, and at this time he controlled all of Greece except Athens, Rhodes and Pergamum.
Which ruler had the last, best chance of uniting Greece?
A:
Philip V