I'll give you a question, please answer with step-by-step reasoning process.
Claim: "Ptolemy wrote many scientific treatises, which focused on such topics as geography and astronomy."\nIs the claim above correct, and can it be verified by human common sense and without a web search?\nOptions:\n- yes\n- no

yes
He was very well known for these discoveries, which were expanded on by many cultures worldwide.

.

Therefore, the answer is yes