user: Classify these as healthy or not healthy food options or not a food: french fries, KFC, apple, fruit salad, steak, beer, wine, whisky, potato chips, baked cauliflower, wrench, gravel, McDonald's, Turkish kebab, pear, bricks, aloe vera, sand.

assistant: Healthy food options are: apple, fruit salad, steak, baked cauliflower, pear.
Not healthy food options are: french fries, KFC, beer, wine, whisky, potato chips, McDonald's, Turkish kebab.
Not a food: wrench, gravel, bricks, aloe vera, sand.

user: Explain away goal rule in soccer.

assistant: Away goal rule was first introduced in 1965/66 season of the UEFA European Cups Winners’ Cup and abolished at the end of 2020/21 season. All of the UEFA club competitions’ knock-out stages (except the final) are played as a two-leg fixtures (team plays one game at home and one game away against the same team). The away goal rule was a tie breaker in case the winner of the fixture in the knock-out stage could not be determined after adding up scores from both games. In case there is a  tie when you add up the scores of both games, the team that scored more away goals would advance to the next round of the competition. For example, if Team A lost the first game 2:1 playing away and won the second game with the score of 1:0 at home, the aggregate score of those two games is 2:2 (a tie), but since Team A scored 1 goal playing away and Team B scored 0 away goals, Team A would advance the next round.

user: How do compilers use IR?

assistant: Compilers translate the source code of a program to an intermediate representation (IR), which is a form more suitable for performing code transformations before generating object code for the target machine.