According to me cases somewhat would be like:
- Man is using stairs made of concrete to go down (positive)
- Man is using Stairs made of wood or rope (positive)
- Man is going down and steps are incomplete (negative)
- Man is going down via rope and stairs and half way its broken (negative)
- Man is using rope rope and wood stairs and Rope is not able to hold the weight of man. (Negative)
- Just a floor above ground no stairs are present (Negative)
- Man is falling from building (Negative)