Some (calling birds) may be replaced by a (voice mail system).Logical formLearned from6 sentences. A member may be replaced.Logical formLearned from6 sentences. A form may replace a form.Logical formLearned from6 sentences. Words may be replaced by words.Logical formLearned from6 sentences. A male may replace (chief executive).Logical formLearned from6 sentences. A male may replace a management.Logical formLearned from6 sentences. Goods may be replaced.Logical formLearned from6 sentences. Iron may replace bronze.Logical formLearned from6 sentences. A harddrive may be replaced.Logical formLearned from6 sentences. Ones may be replaced by others.Logical formLearned from6 sentences. Checks may be replaced.Logical formLearned from6 sentences. Fans may be replaced.Logical formLearned from6 sentences. A person may replace a material.Logical formLearned from6 sentences. A heating may be replaced.Logical formLearned from6 sentences. A female may replace a female on bass.Logical formLearned from6 sentences.