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 self-need strategy, otherwise output No. self-need is a selfish negotiation strategy. It is used to create a personal need for an item in the negotiation, such as by pointing out that the participant sweats a lot to show preference towards water packages.

Input: Consider Input: Context: 'Hello! I would like more packages of food the most. What are you looking for?' 'I would need water the most as I forgot to bring enough. I can give you all my food for all of you water, if you'd like?' 'That would be amazing! So I could take all 3 packages of the food and you could have all 3 packages of the water. Now, we just need to split the firewood. Could I take 2 of the firewood leaving you with 1? I think I would need more for cooking the food. '
Utterance: 'Awesome! That does sound like a deal. I wish we had more firewood to split because I am afraid it might get cold.'

Output: Yes


Input: Consider Input: Context: 'Hello there, I'm in a lot of need for some firewood! I'd not be against taking most of it if that's alright?' 'Hi, I need the all food package. I will frequently feel hungry'
Utterance: 'I can give you two of the packages if you're willing to give me all 3 of the firewood. I left mine out in the rain a couple of nights ago so its all ruined.'

Output: Yes


Input: Consider Input: Context: 'What about I have all the food, and you can have everything else? I would think that seems pretty fair.' 'Sorry, I understand where you are coming from but I really need at least one food.  ' 'I'm sorry. I would really appreciate having all the foods, because this camping trip is a get togther with my 5 friends one of whom is her birthday and recently lost her mom. So we need lots of snacks to help her celebrate her birthday and support her during this hard time.'
Utterance: 'No I can't do without a food for me.  We can wrap this up if you take 2 food and a water. 🙂🙂'


Output: No