Question

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They did this at the Grand Cafe 1896.
The first colour films were made in the 1930s

Answer 1

Did they do this at the Grand Cafe 1896?
When did they do it?
They did this at the Grand Cafe 1896, didn't they?
Did they do this at the Grand Cafe 1896 or 1900?
Who did this at the Grand Cafe 1896?

Were the first colour films made in the 1930s?
When were the first colour films made?
Were the first colour films made in the 1930s or in 1950s? 
The first colour films made in the 1930s, weren't they?