What is the fine-grained topic of the following text: Deputy President of the Senate Federal Republic of Nigeria Senator Ike Ekweremadu in a letter he personally to Nwankwo Kanu extols the good virtues of selfless service to humanity which she has bequeathed creditably to her children thereby keeping her name alive in the kind pages of history . Only return the topic.
Senator Ike Ekweremadu's letter to Nwankwo Kanu praising selfless service to humanity