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: 'Food as well teenage boys you know they eat a lot of food, and then a bit of firewood  but i am sure we will agree on something' 'Right...hmm. What do you say to 2 food, 1 firewood for me?' 'i am good with that how many waters do you want can i have 2?'
Utterance: 'Sure we can do that 🙂'

Output: No


Input: Consider Input: Context: 'Hello, I want to keep 3 packages of the water and 2 packages of the food and 1 package of the fire wood , and you can keep 1 package of the food and 2 packages of the firewood.'
Utterance: 'Could I get 1 package of the water just to be entirely safe?? I really appreciate the 2 packages of firewood as it has been very wet and rainy where I will be going.  There will be a lot of standing water, so my chances for having safe water to drink might be a little iffy.'

Output: No


Input: Consider Input: Context: 'Hi, I hope we can work together to get an offer that benefits both of us.🙂' 'I agree! Nice to meet you... I have two boys who always eat! Any chance I canget 2 food?'
Utterance: 'Food is the item of greatest value to you?'


Output: Yes


