sentence 1: How do I know if I'm good?
 sentence 2: How do I know what I'm good at? sentence 1: What is the Sahara, and how do the average temperatures there compare to the ones in the Sonoran Desert?
 sentence 2: What is the Sahara, and how do the average temperatures there compare to the ones in the Arabian Desert? sentence 1: Where can I find an establishment that offers restoration of old leather/synthetic leather bags as a service in Manila, Philippines?
 sentence 2: Are all animal skins from food production used as leather, or is there an oversupply? Is there any real reason to change to synthetic leathers?
not same meaning
same meaning
not same meaning