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 elicit-pref strategy, otherwise output No. elicit-pref is a cooperative negotiation strategy. It is used to discover the preference order of the opponent in the negotiation.

Input: Consider Input: Context: 'Hey there fellow camper! How's it going? ' 'Hey camper buddy! all goes well. and you?' 'All is good. Could you tell me about your package preferences?'
Utterance: 'I need water and firewood. What about you?'

Output: Yes


Input: Consider Input: Context: 'Hello, How is your camping experience so far 🙂' 'It's going well.  🙂  How is yours?'
Utterance: 'It was going great until a bear came and took all of our food 😮'

Output: No


Input: Consider Input: Context: 'i cant afford to give you all 3 waters because i would need some for myself' 'I completely understand, I have a large family coming along, I really need the extra supplies, as for the food and firewood are you okay with the amount? ' 'i am an avid water drinker. i can afford to give you 2 water for three firewood though'
Utterance: 'I have alot of children, and those little rascals can chug water like there is no tomorrow, will you allow me to get the 3 waters and you can have 2 firewood and and 3 foods, what do you think?'


Output: No