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.

Ex Input:
Context: 'Why do you have a risk of dehyrdation? Because I believe all people do but I do understand some people are at a greater risk then others. Tell me why you are at risk?' 'I have a medical condition that requires medication, and this medication requires me to drink an extra amount of water or else I will dehydrate. ' 'That is a problem. Does the medication require the use of fire or firewood as well?'
Utterance: 'No, of course not. You can have the extra of those if you'd like. It is really the water that is the most important to me. '

Ex Output:
Yes


Ex Input:
Context: 'Hi, how are you, ready for the big camping trip?!' 'Yep.  I am excited.  I could really use the decompression and time away from society. ' 'I agree, can't wait to unplug. As far as supplies go, I think its going to be hot and sunny where I'm going, wouldn't mind a bunch of extra water.'
Utterance: 'Water is extremely important to me too.  I can give you 2 waters if you give me all 3 firewoods. '

Ex Output:
No


Ex Input:
Context: 'one food is not enough i am pregnant and i need to eat many meals' 'My friend is ill and needs to eat to survive. How about I take 3 water then and you can have 2 food and all of the wood?' 'sounds reasonable'
Utterance: 'Great! glad we could come to an agreement. May I ask why you are camping while pregnant?'

Ex Output:

No


