Who was president of the us when Luo Bingzhang was a teenager?

At the time when Luo Bingzhang (Pinyin:, Wade-Giles:, Styled Yuman 籲門 and variably Zuzai 儒齋; Posthumous name: Wenzong 文忠;(1793 -, 1867), the eminent Han Chinese official, military general, and devout Confucian scholar of the late Qing Dynasty in China was a teenager (a human being between the ages of 13 and 19 inclusive) who was a US president, the president of the United States of America?

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Show reasoning Reasoning

I followed this chain of reasoning:

I know from locally stored knowledge that:
Luo Bingzhang is a person ([fact: ["666398120@trueknowledge.com"]])

January 9th 1793 is the birthdate of Luo Bingzhang ([fact: ["666398160@trueknowledge.com"]])

By calculation (generator: ["timepoint_sum@trueknowledge.com"]) I know that:
January 9th 1806 is the timepoint sum of January 9th 1793 and 13 years

January 9th 1813 is the timepoint sum of January 9th 1793 and 20 years

By calculation (generator: ["teenager@trueknowledge.com"]) I know that:
Fact 1: Luo Bingzhang is a teenager

Fact 1 is true for January 9th 1806 - January 9th 1813

Fact 1 is true for 1806 - 1813

I know from locally stored knowledge that:
Fact 2: Thomas Jefferson is a US president ([fact: ["123989915@trueknowledge.com"]])

Fact 2 is true for March 4th 1801 - March 4th 1809 ([fact: ["130967825@trueknowledge.com"]])

Therefore (generator: ["distinct_interleave@trueknowledge.com"]):
US president is not a distinct class from entity that is capable of deliberate action

By calculation (generator: ["overlap1@trueknowledge.com"]) I know that:
March 4th 1801 - March 4th 1809 is overlapping with January 9th 1806 - January 9th 1813

I know from locally stored knowledge that:
Fact 3: James Madison is a US president ([fact: ["123989916@trueknowledge.com"]])

Fact 3 is true for March 4th 1809 - March 4th 1817 ([fact: ["130967959@trueknowledge.com"]])

By calculation (generator: ["overlap1@trueknowledge.com"]) I know that:
March 4th 1809 - March 4th 1817 is overlapping with January 9th 1806 - January 9th 1813

I know from locally stored knowledge that:
1793 is the birthdate of Luo Bingzhang ([fact: ["666398148@trueknowledge.com"]])

By calculation (generator: ["timepoint_sum@trueknowledge.com"]) I know that:
1806 is the timepoint sum of 1793 and 13 years

1813 is the timepoint sum of 1793 and 20 years

By calculation (generator: ["overlap1@trueknowledge.com"]) I know that:
March 4th 1809 - March 4th 1817 is overlapping with 1806 - 1813

March 4th 1801 - March 4th 1809 is overlapping with 1806 - 1813

I used the following facts to provide this answer:

Luo Bingzhang is a person

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January 9th 1793 is the birthdate of Luo Bingzhang

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Thomas Jefferson has been a US president between March 4th 1801 and March 4th 1809

agree disagree edit

James Madison has been a US president between March 4th 1809 and March 4th 1817

agree disagree edit

1793 is the birthdate of Luo Bingzhang

agree disagree edit