you are likely to find Bug in/at/on Garden. you are likely to find Garden in/at/on Park. Park is related to Car. Car is related to Mechanic. 
Toilet is related to Bathroom. Bathroom is related to Shower. the last thing you do when you Exercise is Shower. Exercise is related to Protest. 
Bug --AtLocation--> Garden --AtLocation--> Park <--RelatedTo--> Car <--RelatedTo--> Mechanic 
Toilet <--RelatedTo--> Bathroom <--RelatedTo--> Shower <--HasLastSubevent-- Exercise <--RelatedTo--> Protest 