We would like you to assess the QUALITY of each of the following argument (discussing Death Penalty) and determine if the argument is Valid or Invalid. A valid argument is clearly interpretable and either expresses an argument, or a premise or a conclusion that can be used in an argument for the topic of death penalty. An invalid argument is a phrase that cannot be interpreted as an argument or not on the topic of death penalty.

[EX Q]: The argument for the death penalty as a deterrent has been proved wrong by the implementation of it through history.
[EX A]: Valid

[EX Q]: Truth is, the number of innocents that get locked up is a lot higher percentage than 1%.
[EX A]: Valid

[EX Q]: Without corroborating evidence conviction is unsafe, and execution is unthinkable in a civilised legal system
[EX A]:
Valid