Philosophy of Language- comparing Frege and Russell- definite descriptions

g. ‘the US President in 2021’) work according to Frege.  Explain how Russell claims they work.  How are these views different and who is right? Based on the following:From  the Michael Beany Frege Reader:1-  ‘On Sinn and Bedeutung’- Gottlob Frege 2- ‘Thought’-Gottlob Frege 3- ‘Comments on Sinn and Bedeutung’—Gottlob Frege 4- On Concept and Object’- Gottlob Frege From Martinich- The Philosophy of Language:5- ‘On Denoting’- Bertrand Russell 6- ‘Descriptions’- Bertrand Russell