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: 'Nice. Same, it's over 100 degrees where I live. 🙂' 'Yikes! It's a bit colder up here, that's why I would like to bring some extra firewood to stay warm at night.' 'Oh, I see what you did there. No problem I have plenty of firewood for you buddy. 🙂'
Utterance: 'Great! What extra supplies would you like to bring?'

A: Yes
****
Q: Context: 
Utterance: 'Hi there! I was looking for 3 extra packages of food and 3 packages of firewood.'

A: No
****
Q: Context: 'hello, how do you suggest we share the items?'
Utterance: 'Hi there! Well first I was wondering what item you think you'd like or need the most?'

A:
Yes
****