In symbolic computation (or computer algebra), at the intersection of mathematics and computer science, the Risch algorithm is an algorithm for indefinite integration. It is used in some computer algebra systems to find antiderivatives. It is named after the American mathematician Robert Henry Risch, a specialist in computer algebra who developed it in 1968.
Robert Risch was a mathematician  OPTIONS:
- Yes
- It's impossible to say
- No
A: Yes

The Queen, often referred to as the Evil Queen or the Wicked Queen, is a fictional character and the main antagonist in "Snow White", a German fairy tale recorded by the Brothers Grimm; similar stories are also known to exist in other countries. Other versions of the Queen appear in "Snow White" derivative works, and the character has also become an archetype for unrelated works of fiction.
Characters with qualities like the Evil Queen show up in fictional stories unrelated to "Snow White." OPTIONS:
- Yes
- It's impossible to say
- No
A: Yes

Yeji is a town in south Ghana and is the capital of Pru District of the Brong-Ahafo Region in Ghana. Yeji is in the north-east of Brong-Ahafo Region, and is adjacent to Lake Volta. Yeji is connected by highway to Ejura and Kwadjokrom. It had a population of 29,515 at the census of 2010.
Yeji is a town in north Ghana. OPTIONS:
- Yes
- It's impossible to say
- No
A:
No