Who composed the ballet 'Swan Lake'?

Pyotr Ilyich Tchaikovsky

What fruit, eaten in the underworld, prevented Persephone’s full return to earth? What country's national soccer team has the nickname 'The Three Lions'? Pyrenees Mountains serve as a border between Spain and which other country? Who is Bruce Banner’s cousin that gained similar powers after an emergency blood transfusion? What mathematical term refers to the number located below the fraction line?