Title: Alexander Graham Bell.
Question: What field did Bell later work in, apart from optical telecommunications and aeronautics?

Title: Tucson, Arizona.
Question: Where is the US Army Intelligence Center?

Title: Arnold Schwarzenegger.
Question: How much did the magazines Schwarzenegger wrote for pledge to contribute to physical fitness initiatives each year when he was Governor?

Title: Tuberculosis.
Question:
What phase of clinical trials have some new vaccine options reached?