Problem: 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.

Based on the paragraph above can we conclude that "Studies need to be done on the safety of the patent technology."?

A: It's impossible to say

Problem: When she was barely 20 years old, Dutch singer Edsilia Rombley got her first large taste of international acclaim. Already a winner of the smaller imitation contest Soundmix Show, she decided to shoot higher. With a great deal of determination, she performed in front of hundreds of millions of television viewers at the 1998 Eurovision Song Contest in Birmingham, United Kingdom. Her song, the R&B flavored "Hemel en aarde" (Heaven and earth), placed fourth and gave her country their highest placing at Eurovision since their last win in 1975. No Dutch contestant after her has been able to place similarly.

Based on the paragraph above can we conclude that "Edsilia Rombley died in 2015"?

A: It's impossible to say

Problem: Stolen Cat<br>Tim was walking home one day. He saw a cat and took it with him. After a while a neighbor knocked on his door. The cat was theirs and they wanted it back. Tim reluctantly returned it.

Based on the paragraph above can we conclude that "Tim had the cat for a few days."?

A:
It's impossible to say