If you listen to music, then you listen to Drake.
If you listen to Drake, then you listen to music.
This is true because the song “The Jungle” by Drake is music.
If it is snowing, then there is no school.
If there is no school, then it is snowing.
This is false because last monday when there was no school, it did not snow.
If you are going outside, then you are wearing a sweater.
If you are wearing a sweater, then you are going outside.
This is false because I do not wear a sweater when I go outside in the summer.