Identify the two negative words in the sentence.
I haven't found any interesting books lately.
The two negative words in the sentence "I haven't found any interesting books lately" are "haven't" and "lately".
Complete the following task based on the instruction and optional input provided.### Instruction:
Identify the two negative words in the sentence.

### Input:
I haven't found any interesting books lately.

### Output:
The two negative words in the sentence "I haven't found any interesting books lately" are "haven't" and "lately".