Hotel is related to Summer. Summer is a type of Spend. Vacation is a type of Spend. Vacation is related to Event. 
Ride is related to Tourist. Tourist is related to Holiday. 
Hotel <--RelatedTo--> Summer --IsA--> Spend <--IsA-- Vacation <--RelatedTo--> Event 
Ride <--RelatedTo--> Tourist <--RelatedTo--> Holiday 