text: By noon on May 20, authorities traced 79 F1s at the company involving many districts, towns and cities in the province?
classes:  No, 79 F1 cases will be quarantined centrally at the company.   Besides, 79 F1 cases will be quarantined centrally at the company.   Yes, 79 F1 cases will be quarantined centrally at the company.   Meanwhile, 79 F1 cases will be quarantined centrally at the company. 