The input is taken from a negotiation between two participants who take the role of campsite neighbors and negotiate for Food, Water, and Firewood packages, based on their individual preferences and requirements. Given an utterance and recent dialogue context containing past 3 utterances (wherever available), output Yes if the utterance contains the no-need strategy, otherwise output No. no-need is a cooperative negotiation strategy. It is used when a participant points out that they do not need an item based on personal context such as suggesting that they have ample water to spare. no-need can directly benefit the opponent since it implies that the item is up for grabs.

Example Input: Context: 'Hi, it is nice to be going camping. I do not have a very good sleeping bag and I can get cold at night. It would be nice to have extra firewood. I dont eat much so I do not need much extra food. Would you be willing to give me two packages of firewood for a package of food?' 'I enjoy camping as well. However, my campsite seems to be a bit chilly at night. I'd be willing to part with some firewood, yet I'd need quite a bit of food to compensate. I also have a stream nearby so water is plentiful if you need that as well.'
Utterance: 'I may be able to do something with regards to food. Do you have enough water?'
Example Output: Yes

Example Input: Context: 'Hello.  I am very interested in the firewood and would be very willing to forfeit all the water.' 'oh really.  i am willing to make a negotiation with you on that for sure.  where are you plannign to camp?'
Utterance: 'I'm camping near a natural spring and will have all the water I need.  How are you planning to eat?'
Example Output: Yes

Example Input: Context: 'Hi! I look forward to making a trade with you that's good for us both.' 'Me too, hopefully we can get together on a deal.'
Utterance: 'I'm hoping so too. What's most valuable to you?'
Example Output:
No