question:
The San Diego River runs through the middle of San Diego from east to west, creating a river valley which serves to divide the city into northern and southern segments.
What is created by the many canyons and hills throughout San Diego?

answer: no

question:
Many patients have a multi-drug resistant strain, and 83% are co-infected with HIV.
Of pregnant women, how many are believed to be infected with HIV?

answer: no

question:
The Quito Astronomical Observatory is the National Observatory of Ecuador and is located in the Historic Center of Quito and is managed by the National Polytechnic School.
What school oversees the Quito Astronomical Observatory?

answer: yes

question:
The Rensselyrics of Rensselaer Polytechnic Institute (formerly known as the RPI Glee Club), established in 1873 is perhaps the oldest known collegiate a cappella group.[citation needed]
What is the previous name of oldest recorded college a cappella group?

answer:
yes