A variety of devices could be powered selectively from a single-power source carried on the body via multiple power supply signals at different frequencies, according to the patent abstract.
This innovation is the result of the effort of one single, extremely brilliant entrepreneur and inventor. 
A: It's impossible to say

The Mountains<br>The explorers were hiking. They were trying to pass through a mountain range. They spent three days trying to cross. They finally found themselves walking downhill again. They had reached the other side!
There were 5 explorers in total.
A: It's impossible to say

BOZEMAN, Mont. (AP) — Authorities say four people, including three children, were hospitalized after a gas explosion at a home in West Yellowstone. Shane Grube, chief of the Hebgen Basin Rural Fire District said firefighters were called to the mobile home Tuesday morning. He says the explosion caused a fireball that blew itself out. Two people suffered severe injuries and two were moderately injured. All of the victims were taken to a hospital in Rexburg, Idaho. The fire district is investigating with help from the state fire marshal’s office. No other details were released.
The three children are unrelated.
A: