A sense may pertain-to an unknown.Logical formLearned from43 sentences. An unknown may pertain-to a male.Logical formLearned from43 sentences. Fears may pertain-to an unknown.Logical formLearned from41 sentences. A person can be afraid of an unknown.Logical formLearned from40 sentences. Persons may delve into an unknown.Logical formLearned from38 sentences. A thrill may pertain-to an unknown.Logical formLearned from38 sentences. An unknown can be from a us-state.Logical formLearned from38 sentences. Persons may fear an unknown.Logical formLearned from37 sentences. An unknown can be to a ticket.Logical formLearned from36 sentences. A political-leader may add an unknown to a ticket.Logical formLearned from36 sentences. A trip can be into an unknown.Logical formLearned from36 sentences. An unknown can be scary.Logical formLearned from35 sentences. A leap can be into an unknown.Logical formLearned from34 sentences. Challengers may pertain-to an unknown.Logical formLearned from33 sentences. The world may pertain-to an unknown.Logical formLearned from33 sentences.