How literal is this phrase?

Sample examples at http://tinyurl.com/is-it-lit

silver bullet:

Definitions:

  1. a simple guaranteed solution for a difficult problem
  2. $ a bullet made with silver

Examples:

  1. improve data resource quality . Many of these approaches are simply the current wave of silver bullets that will not substantially resolve data disparity or improve data resource quality . The only
  2. like Uncle Festa , so the devil became Peter Cook , We all bite the silver bullet and go for one brief morbid look , At chainsaws , at ' Scream '
  3. quality and resolve existing disparate data , or are they simply the current wave of silver bullets that are more hype than reality ? If they are only silver bullets , what
  4. for example creating a market in undersized fish . Although there is no single " silver bullet " solution to discards , there is a range of ways that discards can be
  5. advantages . For this reason general use of asynchronous design , instead of being a silver bullet turns out to be a blank . Francky Catthoor For real-time signal processing applications ,

Step 1: Select the definition of silver bullet which occurs most of the times in the above examples. Ignore other definitions.

Definition1 Definition2

Note: Please select the answers below carefully based on the definition which occurs frequently in the examples

Step 2: score of 0-5 for how literal is the use of "silver" in the phrase "silver bullet"
0 1 2 3 4 5

Please provide any comments in case you want to tell us about your judgement or any other queries/suggestions! Not Mandatory but helpful.