I’m having trouble understanding what 何か means in the following sentence:

今のチンさんの発言に対して、何か意見がある人は手を上げてください。

For the most part I understand the sentence, just not 何か
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2019-04-30T05:00:26.930
67891
2019-04-30T05:29:23.117
33885
question
grammar translation
What does 何か mean in this sentence?