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.

Q: Context: 'Hello, how are you?' 'Im good how are you?' 'I'm doing great, thanks.'
Utterance: 'How many of each supply would you like? what is your favorite?'

A: Yes
****
Q: Context: 'I need some firewood because I did not bring enough, I was thinking I could take 2 firewood, 1 food, and 2 water. What do you think?'
Utterance: 'I can do that for you!'

A: No
****
Q: Context: 
Utterance: 'What are you most interested in getting?'

A:
Yes
****