Note is related to Classroom. you are likely to find Classroom in/at/on University. University is related to Fellow. Fellow is related to Buddy. 
Plane is related to Flying. Flying is related to Angel. 
Note <--RelatedTo--> Classroom --AtLocation--> University <--RelatedTo--> Fellow <--RelatedTo--> Buddy 
Plane <--RelatedTo--> Flying <--RelatedTo--> Angel 