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Professional conference with speaker presenting to an audience in a seminar hall, focus on crowd listening.
Cyber Big Data Flow Particles Tech Business or Science Background. Medical Research or Tech Innovation Online Webinar Presentation Event. Conference or Forum Vector Illustration Backdrop.
The Colosseum panorama, Colosseo, iconic amphitheatre Arena in the centre of the old town of Rome, Roma, just east of the Roman Forum.
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Blurred view of a speaker at a professional conference with an audience in sharp focus listening attentively.

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