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, I'm going camping today and I can't wait!' 'Nice, so are we!'
Utterance: 'That is awesome! The one bad thing about my campsite is there's no stream or lake nearby. I'm going to need a lot of it so I can shower/wash up'

A: No
****
Q: Context: 'Camping yay!' 'Hello! how are you? hoping today is finding you well. I was wondering if I can get all 3 of your Firewood, I am willing to trade for all 3 waters. I am camping with 40 kids, its our annual youth camp. its rainy season too, I really want to ensure I have enough dried wood with us. need lots of firewood for the amount of cooking I will be doing, keep the camp warm, and specially to keep those pesky bugs away. what do you think?' 'I could really use the firewood too, it will be very cold where we are going. Since it will be cold, we will not be drinking much water. How about 2 firewood for you, 3 food for me?, '
Utterance: 'May I ask how many are going camping with you, i would agree, but the needs of children are different than adults. I will need at least 1 food, to ensure I have enough for the kids. '

A: Yes
****
Q: Context: 'Hello there' 'Hello. How are you?' 'Great and yourself? Ready for this camping trip and take a break from modern civilization?'
Utterance: 'I'm doing well. Yes. This camping trip is badly needed!'

A:
No
****