Nails can be on a chalkboard.Logical formLearned from190 sentences. Fingernails can be on a chalkboard.Logical formLearned from120 sentences. A chalkboard may pertain-to a male.Logical formLearned from67 sentences. Crackers can be for chalkboards.Logical formLearned from60 sentences. A chalkboard may pertain-to a person.Logical formLearned from51 sentences. A chalkboard can be to a person.Logical formLearned from36 sentences. Click can be on a chalkboard.Logical formLearned from28 sentences. A chalkboard can be green.Logical formLearned from25 sentences. A person may have a chalkboard.Logical formLearned from24 sentences. A chalkboard can be for a chalkboard.Logical formLearned from24 sentences. A male may copy from a chalkboard.Logical formLearned from20 sentences. A chalkboard may pertain-to a female.Logical formLearned from19 sentences. A chalkboard may pertain-to persons.Logical formLearned from17 sentences. Click can be on a (wall chalkboard).Logical formLearned from15 sentences. Nails can be on chalkboard.Logical formLearned from15 sentences.