user
There was a green house.   Inside the green house there was a white house  Inside the white house there was a red house.   Inside the red house there were lots of babies. 
A: winter melon
B: algae
C: leaf
D: flush
E: this is a watermelon
assistant
<|begin_of_thought|>

Deep Thought is thinking for 7.5 million years.

<|end_of_thought|>

<|begin_of_solution|>

E

<|end_of_solution|>