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.

Example Input: Context: 
Utterance: 'I need the firewood and the food, you can have all the water.'
Example Output: No

Example Input: Context: 'Im a vegitarian so food I would like 1 food and for fire 2' 'I think that we can work it out 🙂. We could do something like 2 firewood for you, 1 for me. 2 water for me, 1 for you. And 1 or 2 foods for you, 1 or 2 foods for me. What do you think?' 'That is a kind offer. 🙂 The water is very vital for me. How bout 3 water for me, 0 food for me 3 for you and 1 firewood for me and 2 for you '
Utterance: 'Zero water is not going to work 😮. I am willing to switch water and firewood amounts so that I get 2 firewood and 1 water and you get 2 water and 1 firewood. '
Example Output: Yes

Example Input: Context: 'With the cool weather in degrees lower than expected, my family of 7 are consuming firewood faster than expected. Thus, I would like all the firewood in exchange for the food' 'Oh ok, that will be great. How about the water? Is 2 for me and 1 for you ok?' 'How about 2 for me 🙂'
Utterance: 'I have 3 kids with me who are always thirsty but we can negotiate for it'
Example Output:
No

