Accelerate is a synonym of Mushroom. you are likely to find Mushroom in/at/on Tree. Tree is related to Shelter. 
Employee is related to Pay. Pay is related to Increase. Increase is the opposite of Reduce. Reduce is related to Minimize. 
Accelerate <--Synonym--> Mushroom --AtLocation--> Tree <--RelatedTo--> Shelter 
Employee <--RelatedTo--> Pay <--RelatedTo--> Increase <--Antonym--> Reduce <--RelatedTo--> Minimize 