Answer:
the plaintiff.
Explanation:
The plaintiff -
It refers to the person or the party , who is responsible for starting the lawsuit before the court , is known as the plaintiff .
The plaintiff being in trouble , and hence tries to take help from the legal procedure .
Hence , from the given scenario of the question ,
As Ian is not able to deliver water to the Jill's farm , and hence , jill takes helps from the court .
Therefore , Jill is the plaintiff .
