Answer the following questions, which refer to the answers of previous questions or to things you already know or understand.

Q1.  Who was the first U.S. President?
Q2. How many biological children did A1 have?
Q3. What is A2 + 5?
Q4. Who was the A3-th U.S. President?
Q5. What is the first letter of A4's surname?
Q6. Which of "NAME_1" and "NAME_2" start with A5?
Q7. Give an array of the first A3 positive integers.
Q8. What is the second-to-last element of A7?
Q9. Remove the letter "u" from A8 spelled as a word.
Q10. Interpolate: "One {A9} all, all {A9} one."
Q11. Who wrote NAME_3 Quixote?
Q12. What is A11's first name?
Q13. Are A6 and A12 the same string? Yes/No.
Q14. Repeat A13, A3 times in a row.
Q15. Concatenate the strings A14 and A6.

Use this format:

Question ${number}: ${Question text}
Rationale: Let's think step by step. First, ${write step-by-step deductions.}
Answer: A{number} ${Answer}

Repeat this format for each question. Do not include the following keywords: q2, format, q3, president
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