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: 'Wow.. Cool ' 'Are you prepared for the camp?' 'Yes A little.. But I would need extra camping items '
Utterance: 'Ok, I do too. What do you really need?'
Example Output: Yes

Example Input: Context: 'I need at least one ration of food. Would it be ok with me: 3 firewood and 1 each of food and water. If you are ok with that, I am too.' 'Sure, that sounds like a nice deal.' 'That's awesome. Sounds like we need to set the deal up.'
Utterance: 'Agree, I think after I send this message it will unlock, for me to have 2 water, 2 food and 0 firewood. Thanks for working together'
Example Output: No

Example Input: Context: 'Hi. Can you help me get supplies for my camping trip?🙂' 'Hello fellow camper! I'm pretty sure I can help you. 🙂'
Utterance: 'Okay, great! What do you need the most?'
Example Output:
Yes