Problem: Write the next sentence for:
A man in a red shirt is talking in front of a screen. Then a field is shown and various shots of different people. there.

Next sentence: is a polo match with horses.

Problem: Write the next sentence for:
How to treat algae in a swimming pool 
Test and adjust the pool's ph. 
One of the main causes of algae growing in a pool is if the ph of the water gets too high, because this prevents the chlorine from killing the algae. Collect some water from the pool and test the ph levels with a test kit..

Next sentence: To lower the ph, add some muriatic acid or sodium bisulphate. To increase the ph, add sodium carbonate.

Problem: Write the next sentence for:
Various items are shown on a floor and leads into a woman holding up the products and speaking to the camera. She holds up her shoe and lights a match over the polish. she.

Next sentence: then takes a rag and runs over the boot with the polish in small circles.

Problem: Write the next sentence for:
A professional diver named pandelela rinong is getting ready to dive in a competition. she.

Next sentence:
goes forward on the diving board and does a backward dive into the pool from several feet.