6. The apparatus according to claim 5 , wherein the storage stores the similar example, the translation example, and an annotation for at least one of the similar example and the translation example in association with each other.
7. The apparatus according to claim 6 , wherein if the first language word string has a first similar example and there is the annotation associated with the first similar example, the presentation unit causes the display to display a second icon in association with the first language word string and the corresponding second language word string to indicate that the annotation is available.