Detailed Instructions: In this task, you're given a question, along with a context passage which has extra information available on certain terms mentioned in it. Your job is to determine which sentence(s) from the passage can be used to search for further information needed to answer the question.
Q: Question: Which of the two counties where Mihail taught has a larger population? Passage:Born in Bucharest, he was the fourth child (out of seventeen, of whom nine survived) born to Captain Nicolae Săulescu (known as the Romanian Army's official painter) and his wife Ecaterina (née Gaist). From 1898 to 1903, he studied at Saint Sava and Matei Basarab high schools in his native city. Săulescu then entered the Conservatory of Dramatic Art, quitting in 1904 after his first year. Leaving Bucharest, he worked as a teacher in Gorj County and a substitute in Posada, Prahova County in 1908. In 1911, he was an editor at Luceafărul magazine in Sibiu, then a part of Austria-Hungary. After returning to the Romanian capital, he was editor at Rampa (1911-1912), librarian at the Socec folk library (1912-1913), clerk at the Public Instruction Ministry, junior clerk at Casa Școalelor cultural foundation and editor at Rampa nouă ilustrată (1914). In 1908, he was a founding member of the Romanian Writers' Union.

A:
Leaving Bucharest, he worked as a teacher in Gorj County and a substitute in Posada, Prahova County in 1908