Beam is related to Fiction. Fiction is the opposite of Documentary. 
Sound is the opposite of Silent. Silent is a different concept from Talk. Talk is a synonym of Debate. you are likely to find Debate in/at/on University. 
Beam <--RelatedTo--> Fiction <--Antonym--> Documentary 
Sound <--Antonym--> Silent <--DistinctFrom--> Talk <--Synonym--> Debate --AtLocation--> University 