Seismographs can be portable.Logical formLearned from42 sentences. An (oxygen concentrator) can be portable.Logical formLearned from42 sentences. Typewriters can be portable.Logical formLearned from42 sentences. A (game machine) can be portable.Logical formLearned from42 sentences. Owners may pertain-to a portable (music player).Logical formLearned from42 sentences. Trailers can be portable.Logical formLearned from42 sentences. Houses can be portable.Logical formLearned from41 sentences. Scanners can be portable.Logical formLearned from41 sentences. A workstation can be portable.Logical formLearned from41 sentences. Dvds can be portable.Logical formLearned from41 sentences. A (power source) can be portable.Logical formLearned from41 sentences. (Thumb drives) can be portable.Logical formLearned from41 sentences. An unit can be portable.Logical formLearned from41 sentences. Detectors can be portable.Logical formLearned from41 sentences. An electronic equipment can be portable.Logical formLearned from41 sentences.