Question: Extract the answer to the question from the following context. Question: The top is held in place with? Context: Inner and outer vestibules lead to the octagonal chapter house, which is of exceptional architectural purity. It is built in a Geometrical Gothic style with an octagonal crypt below. A pier of eight shafts carries the vaulted ceiling. To the sides are blind arcading, remains of 14th-century paintings and numerous stone benches above which are innovatory large 4-light quatre-foiled windows. These are virtually contemporary with the Sainte-Chapelle, Paris.
Answer: eight shafts

Question: Extract the answer to the question from the following context. Question: What were the conditions of the licenses? Context: In the next two years, the company established its first factory in south India in the town of Machilipatnam on the Coromandel Coast of the Bay of Bengal. The high profits reported by the company after landing in India initially prompted King James I to grant subsidiary licences to other trading companies in England. But in 1609 he renewed the charter given to the company for an indefinite period, including a clause that specified that the charter would cease to be in force if the trade turned unprofitable for three consecutive years.
Answer: a clause that specified that the charter would cease to be in force if the trade turned unprofitable for three consecutive years

Question: Extract the answer to the question from the following context. Question: What well-known extinction event predates the evolution of placental mammals? Context: Recent molecular phylogenetic studies suggest that most placental orders diverged about 100 to 85 million years ago and that modern families appeared in the period from the late Eocene through the Miocene. But paleontologists object that no placental fossils have been found from before the end of the Cretaceous. The earliest undisputed fossils of placentals come from the early Paleocene, after the extinction of the dinosaurs. In particular, scientists have recently identified an early Paleocene animal named Protungulatum donnae as one of the first placental mammals. The earliest known ancestor of primates is Archicebus achilles from around 55 million years ago. This tiny primate weighed 2030 grams (0.71.1 ounce) and could fit within a human palm.
Answer:
extinction of the dinosaurs