Machine translation apparatus and machine translation method

A machine translation apparatus comprising:

• a memory configured to store question sentences in a second language, answer sentences in the second language, and location information items indicative of a location of a destination in association with one another;
• and
• processing circuitry electrically coupled to the memory, the processing circuitry being configured to:
• perform machine translation on a first text in a first language to generate a first machine translation result in the second language;
• retrieve a first question sentence in the second language similar to the first machine translation result from the memory to obtain a degree of similarity between the first machine translation result and the first question sentence;
• determine a translated sentence in the first language for a first answer sentence in the second language corresponding to the first question sentence to be an output target when the degree of similarity is higher than a threshold and determine the first machine translation result to be an output target when the degree of similarity is equal to or lower than the threshold;
• and
• determine, when newly registering a question sentence, an answer sentence, and a location information item in the memory in association with one another, whether or not a question sentence is present which is similar to the new question sentence and which is associated with another location information item different from the new location information item, and register the new question sentence, the new answer sentence, and the other location information item in the memory in association with one another when no question sentence is present which is similar to the new question sentence and which is associated with the other location information item different from the new location information item.