Finger is a synonym of Bird. Bird is related to Creature. Creature is related to Black. Black is a synonym of African. 
you would Work because Accomplish. Work is related to Task. Task is related to Due. Due is related to Indication. 
Finger <--Synonym--> Bird <--RelatedTo--> Creature <--RelatedTo--> Black <--Synonym--> African 
Accomplish <--MotivatedByGoal-- Work <--RelatedTo--> Task <--RelatedTo--> Due <--RelatedTo--> Indication 