Mind is part of Person. you are likely to find Person in/at/on Conference. Seminar is a type of Conference. 
Favorable is the opposite of Bad. Bad is a synonym of Base. Base is a synonym of Infrastructure. 
Mind --PartOf--> Person --AtLocation--> Conference <--IsA-- Seminar 
Favorable <--Antonym--> Bad <--Synonym--> Base <--Synonym--> Infrastructure 