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.

Example Input: Context: 'one of my kids is on medication so we are going to need to pack a lot of water. so if could spare that it would be appreciated.' 'Well sadly I plan to go hiking a lot so I will need lots of water, but perhaps we can come to a reasonable agreement if I have to shorten my hikes.' 'ok what do you have in mind?'
Utterance: 'Well if I gave you a majority of the water, I would like 1 water, 3 firewood and 1 food.'
Example Output: No

Example 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.'
Example Output: No

Example Input: Context: 'Hi, 🙂 can we make a deal for me having 3 water, 2 food, and 2 firewood?' 'no what about this, I get 3 firewood then rest is yours'
Utterance: 'I think can highly consider it, why do you prefer the firewood? '
Example Output:
Yes

