Cervantes was a writer. He wasn't a director.
Ivan the Terrible and Peter the Great weren't the Polish kings. They were the Russian Tsars.
Walt Disney was a director. He wasn't an actor.
Marko Polo and Vasko da Gama weren't the astronauts. They were the explorers.
Michelangelo was a sculptor. He wasn't a politician.
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На счёт артикля "the" во множественном числе не уверена, но тут думаю сами разберётесь.