Question

What do we mean when we say that “a knowledge base entails a sentence α"?
1. Given the knowledge base KB, α is possibly true.
2.Given the knowledge base KB, α is necessarily true.
3. Given the knowledge base KB, α is conditionally true.
4. All of the above

NOTE:may be one or more option may be correct

Answer 1

Its 3 Given the knowledge....
not very sure

Answer 2

3. Given the knowledge base KB. a is conditionally true