Stare is the opposite of Ignore. Ignore is the opposite of Read. Say is a type of Read. 
Carrier is a type of Chemical. Chemical is related to Salt. Salt is related to Lemon. Lemon is a type of Yellow. 
Stare <--Antonym--> Ignore <--Antonym--> Read <--IsA-- Say 
Carrier --IsA--> Chemical <--RelatedTo--> Salt <--RelatedTo--> Lemon --IsA--> Yellow 