Given the sentence "A person being blindfolded by a girl and a boy." is it true that "Two children blindfold ther father for a big surprise."?
Let's think step by step below.
it is not possible to tell
Just because its a girl and a boy does not mean the person being blindfolded is their father.

Just because the person is being blindfolded does not mean it is for a surprise.

.

Final answer: it is not possible to tell