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: 
Utterance: 'Hello 🙂 What do you need most??'
Example Output: Yes

Example Input: Context: 'I am doing great! camping is super enjoyable' 'Do you bring enough stuff?' 'I have some stuff, but I really need a decent amount of firewood. Gets really cold at night where we camp'
Utterance: 'I am fine with the cold although I might need some to set up the fire. I have a baby with me so I might need to heat up the milk or food. '
Example Output: No

Example Input: Context: 'hello, how are the preparations coming along?' 'Hi There, I'm doing okay with my preparations but I am worried that I don't have enough food or water for the next few days.' 'I also worried about those two items, especially water.'
Utterance: 'Yes, they say it supposed to be really hot the next few days.'
Example Output:
No