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: 'Hi, I am looking at extra items for my camping trip and would like to have 3 firewoods, 3 foods and 2 waters.' 'Hey, I am excited to go camping too!  Would you mind sharing your top priority items with me so that we can come up with a fair deal?  Ideally I would love 3 firewoods, 3 foods, and 2 waters just like you aha.  But perhaps we can each get at least 3 packages of our highest priority item '
Utterance: 'Hmmm, I think I really need the firewood.  I brought softwoods and they burn out quickly so I don't think I'll have enough wood to keep me going through the night. I get kinda scared without the fire.  What is your priority?'
Example Output: Yes

Example Input: Context: 'I'm sure we can come up with a compromise! I understand the need for extra food with exercise. Sometimes I get low blood sugar and need an extra snack. I'll give you 2 food if I can get 1.' 'I think that is a totally fair split for the food. And I actually don't need a lot of firewood. I would be willing to give you all of it in exchange for the water.' 'I think so, too. I'm glad you offered that - we got stuck in the rain and need the firewood to dry our clothes. I'd be more than happy to give you all the water for all the firewood.'
Utterance: 'Great! I get dehydrated very easily, so I am pretty jumpy at the thought of running out! 🙂'
Example Output: No

Example Input: Context: 'we both have the same high value priority. what is number 2 for you? thanks' '🙂 Food' 'me 2 lol, what if you got 2 of the water and me 1 but then i could do 2 of the food and firewood and things would kind of even out with that arrangement.'
Utterance: 'Yes, that would be fair. How much of Firewood would you need?'
Example Output:
Yes