story: If I could go back in time I would play football. I didn't play it until later in life. I have so much fun now playing it but I'm still rusty on the rules. If I would have played in school I would have learned everything. Someday soon I will be at everyone's level.
 selected sentence: If I would have played in school I would have learned everything.
I would have learned everything if I played football in school >Causes> I feel(s) regret