A person may replace skipper.Logical formLearned from12 sentences. A male may replace all-rounder.Logical formLearned from12 sentences. A grin may be replaced by a frown.Logical formLearned from12 sentences. A male may be replaced by backup.Logical formLearned from12 sentences. A nice treaty may replace a version of a charter.Logical formLearned from12 sentences. A person may replace a male of a country.Logical formLearned from12 sentences. A lieutenant may replace a lieutenant.Logical formLearned from12 sentences. A male may replace a player.Logical formLearned from12 sentences. A world-city may replace slavery.Logical formLearned from12 sentences. A male may be replaced in a half.Logical formLearned from12 sentences. A male may be replaced as president.Logical formLearned from12 sentences. A (peacekeeping force) may replace a force.Logical formLearned from12 sentences. Others may be replaced.Logical formLearned from12 sentences. A male may be replaced by manager.Logical formLearned from12 sentences. Production may be replaced by (oil discoveries).Logical formLearned from12 sentences.