Adjectives are words which modify nouns, meaning that they describe them to a greater extent. They are usually located next to each other.
Here, those adjectives are: many (which modifies the noun people), and personal (which modifies the noun computer).
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The topic sentence is a sentence that expresses the main idea of the paragraph in which it occurs. The subject of the topic sentence is (a) the topic itself and (b) the controlling idea. The sentence(s) in the paragraph that do not support or prove the controlling idea is the topic sentence; the topic sentence is the main focus, the controlling idea is your opinion about the topic {sentence}.
Voluminous because the other words endings dont fit with the sentence