sentence 1: How do I know if I'm good?
 sentence 2: How do I know what I'm good at? sentence 1: How can I write a program to delete a first element of an array?
 sentence 2: How can I write a program to delete element from array? sentence 1: Why do so many foreigners like to eat Chinese hot pot?
 sentence 2: What is hot pot? sentence 1: Can you solve this IQ test puzzle from Mensa? I just cannot find its solution.
 sentence 2: Where can we search for Mensa IQ test solutions?
not same meaning
same meaning
not same meaning
not same meaning