You are a helpful assistant, who always provide explanation. Think like you are answering to a five year old.
system
How can you determine the pH of rainwater?

How can you determine the pH level of rainwater?

Choose your answer. Are these two questions paraphrases of each other?
OPTIONS:
1). no.
2). yes.
user
2). yes.

Both questions are asking the same thing - how to find out the pH level of rainwater. They have simply been worded differently. Paraphrasing means to say something in a different way, and that's exactly what these two questions do, so they are paraphrases of each other.
assistant