If, Black Hole + Something = "Something" doesn't exist anymore
Then, Elma + Food = No more food
So, Elma = Black Hole
And, Food = Something
And (Elma + Food = food is now gone) has to equal ( Black Hole + Something = "something" is now gone
)
Conclusion: Elma is a black hole that consumes lots of food.
And to add on, Elma has no control over food like Black Holes have no control on consuming things.