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: 
Utterance: 'I have a family of 7 among of which 4 are in growing stages. Being the first time out with the whole family, we are less prepared and in much need of food.'

Output: Yes


Input: Consider Input: Context: 'yes im ready rocky mountains ' 'awesome! I love the rockies. So let's try and divy up our extra supplies then. Personally, I feel that I'd need the most extra food, as I'm a rather large guy and plan to go hiking a lot during this time. Firewood would be nice, so I could have a big bonfire. What are your prefernces? ' 'i need food the most since there will be my kids and I. I can give up my firewood for food'
Utterance: 'Okay, so how about I get 1 food, and 3 firewood and 1 water, and you get 2 food, 0 firewood, and 2 water'

Output: No


Input: Consider Input: Context: 'Yes, that sounds good to me!' 'How about water? do you need? I can offer 2 of these for 1 pack of food' 'I have plenty of water right now, but need at least 1 pack of food for myself.'
Utterance: 'OK. Do I get the water then? You can at least take a pack'


Output: No