Artificial Intelligence - Knowledge Representation

For answering Q15 – Q19, consider the following set of rules used for giving loans in a bank:

(p N
 (applicant ^name <n> ^salary <35000 ^status NIL)
 →
 (modify 1 ^status No)
)
(p LC1
 (applicant ^name <n> ^salary >100000 ^status NIL)
 (stocks ^holder <n> ^worth >20000)
 →
 (modify 1 ^status C1)
)
(p LC2
 (applicant ^name <n> ^salary >85000 ^status NIL)
 (stocks ^holder <n> ^worth >50000)
 (credit ^user <n> ^score >150)
 →
 (modify 1 ^status C2)
)
Consider the following set of working memory elements:
1. (applicant ^name a ^salary 5000 ^status NIL)
2. (applicant ^name b ^salary 1035000 ^status NIL)
3. (applicant ^name c ^salary 95000 ^status NIL)
4. (credit ^user b ^score 100)
5. (credit ^user c ^score 155)
6. (stocks ^holder a ^worth 10000)
7. (stocks ^holder c ^worth 60000)
8. (stocks ^holder b ^worth 25000)

(p N
 (applicant ^name <n> ^salary <35000 ^status NIL)
 →
 (modify 1 ^status No)
)
(p LC1
 (applicant ^name <n> ^salary >100000 ^status NIL)
 (stocks ^holder <n> ^worth >20000)
 →
 (modify 1 ^status C1)
)
(p LC2
 (applicant ^name <n> ^salary >85000 ^status NIL)
 (stocks ^holder <n> ^worth >50000)
 (credit ^user <n> ^score >150)
 →
 (modify 1 ^status C2)
)
Consider the following set of working memory elements:
1. (applicant ^name a ^salary 5000 ^status NIL)
2. (applicant ^name b ^salary 1035000 ^status NIL)
3. (applicant ^name c ^salary 95000 ^status NIL)
4. (credit ^user b ^score 100)
5. (credit ^user c ^score 155)
6. (stocks ^holder a ^worth 10000)
7. (stocks ^holder c ^worth 60000)
8. (stocks ^holder b ^worth 25000)