academic
audience
auditorium
briefing
business
businessman
classroom
coaching
conference
congress
convention
convention center
cooperation
corporate
education
educator
event
explaining
forum
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group
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indoors
information
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knowledge
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lecture
lecture hall
lecturer
listeners
male
manager
meeting
participants
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presentation
professional
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room
screen
seminar
sitting
speaker
speech
study
studying
teacher
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training