Teacher: In this task, you are given Yelp reviews. The task is to classify a review as "POSITIVE" if the overall sentiment of the review is positive or as "NEGATIVE" if the overall sentiment of the review is negative.
Teacher: Now, understand the problem? If you are still confused, see the following example:
This is my go to place to get the best chicken Pad Thai! Also the price is super good, considering most places have high prices and poor quality. Love this place, its definitely a top 5 fav for take out.
Solution: POSITIVE
Reason: The overall sentiment of the review is positive. Hence, the label is 'POSITIVE'.

Now, solve this instance: I have ordered from this pizza hut four separate times in the past year, and they have always given me good quality food and I have never had a problem, until now. I did an online order for two large three topping pizzas, than added breadsticks and soda for an additional 5 bucks.
While there delivery was fast, the size of the pizza's I received was shocking. They gave me two mediums instead of larges, and when I called them to replace the mediums they said that they definitely gave me two larges.
I used to work at a pizza place and this is not a large. Well, I went and measured the pizzas while I was waiting for the larges and my measuring tape said 12"". I went to pizza hut's website where it says that there mediums are in fact 12"".
Well, when they brought the new ones they were the exact same size. The delivery guy (who was very nice) told me that the manager said that this was their large, I told them this in fact was 12"" when I measured it and he said that a 12"" is a large....ugh...well, on the bright side they told me to keep the first two pizza's so we now have four mediums, so that's cool! lol.

Just be careful what you order from here, usually they are good, but this whole experienced kinda does not make me want to come back. Also, I am never that person who complains, I am actually an easy laid back person, but when I spend 30 bucks I expect more then just mediums.
Student:
NEGATIVE