Try is related to Remember. Retain is a type of Remember. 
Stem is part of Flower. Rose is a type of Flower. you are likely to find Rose in/at/on Garden. Garden is the opposite of Lot. 
Try <--RelatedTo--> Remember <--IsA-- Retain 
Stem --PartOf--> Flower <--IsA-- Rose --AtLocation--> Garden <--Antonym--> Lot 