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Exercise 15: Implement SolveAssignmentVariable and SolveRelationshipVariable
SolveAssignmentVariable Summary
 | If the variable is within the path, use SolvePathVariable. Once solved, if the path is free of variables and the value is known, ensure the value matches. |
| If the variable is the value of the assignment, then simply look it up. |
SolveRelationshipVariable Summary
| If there is only one variable, then use the appropriate entity's relation index to return all possibilities. |
| If there are two variables, then this subroutine should not have been called. |
Input:
An assignment and a position within that assignment.
Output:
A list of entities.
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