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.Bald man in a black suit in a classroom with mathematic formulae.
Keywords:
men
education
teaching
adult
indoors
teacher
blackboard
desk
smiling
standing
student
classroom
chair
portrait
professor
learning
seminar
studying
whiteboard
office
business
table
wisdom
lecture hall
science
looking at camera
one person
photo challenge
formulas desk
teacher challenges
office challenge
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