Input: Article: Replicated CDs are mass-produced initially using a hydraulic press. Small granules of heated raw polycarbonate plastic are fed into the press. A screw forces the liquefied plastic into the mold cavity. The mold closes with a metal stamper in contact with the disc surface. The plastic is allowed to cool and harden. Once opened, the disc substrate is removed from the mold by a robotic arm, and a 15 mm diameter center hole (called a stacking ring) is created. The time it takes to "stamp" one CD is usually two to three seconds.

Now answer this question: What type of material is used to make CDs?

Output: raw polycarbonate plastic

Input: Article: The bandolim (Portuguese for "mandolin") was a favourite instrument within the Portuguese bourgeoisie of the 19th century, but its rapid spread took it to other places, joining other instruments. Today you can see mandolins as part of the traditional and folk culture of Portuguese singing groups and the majority of the mandolin scene in Portugal is in Madeira Island. Madeira has over 17 active mandolin Orchestras and Tunas. The mandolin virtuoso Fabio Machado is one of Portugal's most accomplished mandolin players. The Portuguese influence brought the mandolin to Brazil.

Now answer this question: When was the bandolim porpular among the Portugese bourgeoisie?

Output: 19th century

Input: Article: If any boy produces an outstanding piece of work, it may be "Sent Up For Good", storing the effort in the College Archives for posterity. This award has been around since the 18th century. As Sending Up For Good is fairly infrequent, the process is rather mysterious to many of Eton's boys. First, the master wishing to Send Up For Good must gain the permission of the relevant Head of Department. Upon receiving his or her approval, the piece of work will be marked with Sent Up For Good and the student will receive a card to be signed by House Master, tutor and division master.

Now answer this question: What does a student receive when work is Sent Up For Good?

Output:
a card