Does the sentence "Fryderyk Chopin was born in Zelazowa Wola, 46 kilometres (29 miles) west of Warsaw, in what was then the Duchy of Warsaw, a Polish state established by Napoleon." provide a valid answer to the question "Who was responsible for the creation of the Duchy of Warsaw?"

A: yes

Does the sentence "Snapshots usually become available more than six months after they are archived or, in some cases, even later; it can take twenty-four months or longer." provide a valid answer to the question "What are the saved versions of a site called?"

A: yes

Does the sentence "Its construction began during the presidency of Porfirio Diaz and ended in 1934, after being interrupted by the Mexican Revolution in the 1920s." provide a valid answer to the question "Why did the construction of the Fine Arts Palace take so long?"

A: yes

Does the sentence "However, according to California regulations, excessive levels of copper (up to 3892 mg/kg; limit: 2500), lead (up to 8103 mg/kg; limit: 1000), nickel (up to 4797 mg/kg; limit: 2000), or silver (up to 721 mg/kg; limit: 500) render all except low-intensity yellow LEDs hazardous."" provide a valid answer to the question "What LEDs are considered safer than any other?"

A:
yes