50s
board
career
caucasian
classy
college
communication
concentration
consultant
copy space
education
educational
elegant
equipment
explaining
female
gesturing
indoors
information
institute
intelligence
intelligent
interacting
knowledge
lecture
lecture hall
lecturer
lecturing
lesson
literature
mature adult
pointing
presentation
projection screen
school
seminar
showing
smart
sophisticated
speaking
speech
standing
study
stylish
talking
teacher
teaching
training
university
well dressed
woman
working