Simplify the following text for a Grade 12 native English-speaking person.
Original: Possibly , there are also entrances to the system from several civilian buildings such as the Russian State Library , Moscow State University ( MSU ) and at least two stations of the regular metro .
Simplified: There are also entrances to the system from several civilian buildings such as the Russian State Library , Moscow State University ( MSU ) and at least two stations of the regular metro .