Metal is related to Chemical. Chemical is related to Gas. you are likely to find Gas in/at/on Boat. 
Bit is related to Data. Data is related to Science. Science is related to Academic. 
Metal <--RelatedTo--> Chemical <--RelatedTo--> Gas --AtLocation--> Boat 
Bit <--RelatedTo--> Data <--RelatedTo--> Science <--RelatedTo--> Academic 