How George Berkeley argues against Lockes claim

please read the instruction pdf to finish the essay.
Please write an essay in response to the following prompt:
Discuss (using your own words) how George Berkeley, in Part 1 of his
i??Principles of Human Knowledge,i?? argues against Lockei??s claim that
the i??ideasi?? in our mind can function as representations of real material objects.
Explain also what philosophical consequences Berkeley draws from his
argumentation against representationalism.
(In discussing this prompt, you should first briefly explain the key concepts,
especially the concept of an i??ideai?? and what it would mean for an idea to function
as the representation of a material object. Since it is only a short essay, you have
to be selective in what arguments you mention in your essay.)