Other drugs on the market, approved to treat mild to moderate Alzheimer's, are believed to work by inhibiting cholinesterase, an enzyme that breaks down acetylcholine which is a chemical used by nerves to communicate with each other.
There are several other drugs on the market.
There could be several other drugs on the market. The opposite could also be true. Neither definitely correct nor incorrect should be much higher than 9.32%.
( z1 drug :mod ( z2 other ) :quant ( z3 several ) :location ( z4 market ) )