Choose the correct alternative for the given relation.

Heart : Cardiology

Choose the correct alternative for the word belongs to the same group.

Violet : Orange : Yellow

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Berries : Bush

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Couplet : Sonnet : Limerick

Choose the correct description for the given relation.

Sandstone : Limestone : Coal

Choose the correct alternative for the given relation.

Virology : Virus : : Semantics : ?