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gradient copolymers — self-test

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Question 1

According to the article, what is recorded as the P279 of gradient copolymers?

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Q421281

Source: Wikidata

Question 2

According to the article, what is recorded as the P6366 of gradient copolymers?

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2776245643

Source: Wikidata

Question 3

According to the article, what is recorded as the P646 of gradient copolymers?

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/m/03d95ls

Source: Wikidata