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: 'Nice, I am too. I'm actually looking to gather up some extra supplies, what about you?' 'I need extra supplies as well. I'll be camping at a higher elevation and need extra firewood for warmth, extra food and some water. What do you need?' 'I was really looking for extra food, firewood is important to me but I could spare some in exchange. I normally eat more than the average person so I'm worried my food supplies as is will make it hard to get through the trip.'
Utterance: 'I would like a little extra food for myself as well. Would you be willing to split the food 1 for me and 2 for you? '

Output: No


Input: Consider Input: Context: 'i need the firewood because i tend to catch a cold easily and also scared of the dark. i can give you 2 water and 2 food for 3 firewood and i food' 'will you allow me to get 3 waters and you can have the 3 firewood and 2 foods? 🙂' 'yes i can agree to that, thats a good compromise'
Utterance: 'yay, thank you so much! to very I am getting 3 waters, 0 firewood, and 1 food?'

Output: No


Input: Consider Input: Context: 'I'm going to need quite a bit more water, at least 2 packages.  I would like at least 1 food. What do you think?' 'How about you take two water and 1 food and 2 firewood?' 'That's kind of what I was thinking.  That would work for me.'
Utterance: 'OK, great, I forgot my fishing pole so the extra food will really help!'


Output: Yes