For acting in which film did Ben Kingsley get the Oscar for Best Actor?

Which of the following is correct for the seasoned Malayalam film maker Adoor Gopalakrishnan?

ഇന്ത്യയിലെ  ആദ്യത്തെ 70 എം.എം ഫീച്ചര്‍ സിനിമ ഏതാണ്?

Smitha Pateel acted in one Malayalam film directed by Aravindan. Which was that film?

The director of the film Swayamvaram:

The director of the film “Pather Panjali”: