R means run-on F means fragment and S means sentence can you help out?

Answer:
S,F,S,S
Explanation:
1. has a subject, verb, and object. S
2. What about the hot-dog stand? F
3. Has a subject, verb, and object. S
4. It rained all day, cool. The subject would be day. Verb would be rained. Object would be day.