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: 'So could I. How about we split the firewood?' 'How about I take 2 firewood but you can have 2 waters? Water is pretty important and I have a little extra.' 'That sounds fair.'
Utterance: 'How are you on food? '
Example Output: Yes

Example Input: Context: 'I would like 1 or 2' 'OK' 'Could I have 2 firewood?'
Utterance: 'Ok'
Example Output: No

Example Input: Context: 'Hello, what a great time of year to go camping.' 'Yes I can't wait! So sick of being stuck at home. 🙂' 'It will be nice to get out and explore the great outdoors, even if it is super hot!'
Utterance: 'I agree. What supplies could you use more of?'
Example Output:
Yes