Definition: 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.

Positive Example 1 -
Input: Context: 'What do you think if in the camp we get together and have a meeting between your family and mine? We can have a small party to get to know each other better.' 'Sounds great!' 'Ok, my proposal is to give you all the firewood you need, on the condition that you give me all the water I need. And regarding food we can negotiate.'
Utterance: 'That sounds good. What do you propose on the food?'
Output: No

Positive Example 2 -
Input: Context: 'Good morning' 'Hi, how goes it?' 'It's going alright. What do you need the most to trade?'
Utterance: 'well, I run and could use some extra water. How about you?'
Output: Yes

Negative Example 1 -
Input: Context: 'Which one do you prefer most?' 'They sort of need more water for their meds' 'I'm sorry to hear that! But can you spare 1 for me since you probably don't need all the water.'
Utterance: 'Sure that sounds fair. Thank you. Besides water what do you need for your trip?'
Output: No

Negative Example 2 -
Input: Context: 'I am willing to give you the most water if I am able to have the most food.' 'Well I need some food because what if I get lost as well? ' 'I understand that, but walking away with the most food and the most water would essentially leave me for dead lol. Do you prefer water or food? '
Utterance: 'I prefer to have the most water as I have a medical condition that requires me to stay extremely hydrated at all times. If I get too dehydrated, it's extremely bad for me. How about I get 3 water and 1 food, and 2 firewood?'
Output: Yes

Now complete the following example -
Input: Context: 'Your two youngest kids are working? How old is everyone? If there's a lot of people, it will be easier to split up the duties and get things done. My son's 3 years old so as much as he's eager to help, there's not much he can do lol.' 'Ha Ha...no my too youngest have hardly been anywhere because of us adults working,  I have teens (17, 15), tweens (13) and littles (10, 7). We 3 boys and 3 girls. We have a 21 year old but he's in a band so h can't go. They all pitch in anytime. They eat a lot so they have to cook from scratch at home. Awww 3 is so adorable...that's when they are sure they can do and will work so hard! ' 'Home cooking's the best, yumyums! We're planning on doing a lot of fishing since my son's been in love with fishing toys and is currently in love with eating fish (he hasn't gotten tired of eating it every night for dinner). We're thinking of cooking what we catch every night. Do you have any activities planned for your camping trip?'
Utterance: 'Fishing is so fun! 🙂 We really don't have a plan... so many people, so many opinions. If you'll be fishing and eating your catch, you'll probably need more firewood than food. And with the filters, you will need some extra water, especially for your little guy. So would you agree that you take 2 firewood packages, 1 food package and 1 extra water. '
Output: 


Answer: No