Find the third and fourth words in the sentence
I was walking to the store.
The third word in the sentence is "walking" and the fourth word is "to".
Complete the following task based on the instruction and optional input provided.### Instruction:
Find the third and fourth words in the sentence

### Input:
I was walking to the store.

### Output:
The third word in the sentence is "walking" and the fourth word is "to".