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.

Context: 'I might be able to get by with just two... I'm on a diet though, so I don't need as much food.' 'That's a relief. I actually have a friend joining me and they don't have their own food supply. I don't have enough for two people.' 'You can all the food if you need it.🙂'
Utterance: 'Thanks!🙂 Do you need any water packages?'
Yes

Context: '🙂 I am fine with it. How about the firewood?' 'i'll take 2, you can have 1? ' 'Firewood is my second priority. Can I have 2 of firewood?'
Utterance: 'okay🙂 is it cold so you want firewood?'
Yes

Context: 'Hi. Water is very important to me. ' 'Hello, I don't really need water'
Utterance: 'What is it that you need?'

Yes