Determine if the sentence is true based on the text below.
The first two borrowers must start repaying the principal plus interest over a six-week period.

The borrowers must form five-member groups that, along with the bank's field workers, closely supervise the loans. Peer pressure substitutes for collateral because the group's first two borrowers have to start repaying the principal plus interest over a six-week period before the other members can take out loans. The interest rate is fixed at 16 percent.
yes
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Pfizer is a pharmaceutical company.

NEW YORK - (Business Wire) Pfizer Inc announced today that it has become the first pharmaceutical company to be accredited by the Association for the Accreditation of Human Research Protection Programs (AAHRPP) for ensuring the protection of human subjects taking part in early-stage clinical trials. The AAHRPP accreditation was awarded to Pfizer's clinical research units (CRUs) in New Haven, CT, Brussels, Belgium and Singapore, where the company conducts most of its Phase I clinical research. To earn the accreditation, Pfizer participated in a rigorous, 15-month examination of the clinical research practices at these units.
yes
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Afghanistan was invaded by the Soviet Union in 1979.

After the 1979 Soviet invasion and occupation, 3 million Afghans fled to Pakistan, which was encouraged by hefty Western aid to take them in.
yes
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The Shoemaker-Levy comet was discovered by Shoemaker, his wife, Carolyn, and an astronomer David H. Levy.

Among Stellafane's most ardent partisans is David H. Levy, co-discoverer with Dr. Eugene Shoemaker of a comet named for the two that broke apart in 1994 as it was drawn toward Jupiter, creating fireworks visible from Earth.

no