Member is related to Participant. Participant is related to Event. 
Plead is related to Ask. Ask is related to Order. Order is related to Particular. Particular is a synonym of Detail. 
Member <--RelatedTo--> Participant <--RelatedTo--> Event 
Plead <--RelatedTo--> Ask <--RelatedTo--> Order <--RelatedTo--> Particular <--Synonym--> Detail 