Teacher: In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
Teacher: Now, understand the problem? If you are still confused, see the following example:
The Inheritance Cycle is a series of fantasy books written by Christopher Paolini.
Solution: The Inheritance Cycle is a tetralogy of young adult high fantasy novels written by American author Christopher Paolini.
Reason: The output sentence elaborates on the input sentence without changing its general meaning e.g. "tetralogy of young adult high fantasy novels".

Now, solve this instance: Mulberry leaves , particularly those of the White Mulberry , " Morus alba " , are important as food of the silkworm , the cocoon of which is used to make silk .
Student:
Mulberry leaves , particularly those of the white mulberry , are ecologically important as the sole food source of the silkworm ( " Bombyx mori " , named after the mulberry genus " Morus " ) , the cocoon of which is used to make silk .