The five townships A, B, C, D, and E in a county all A County A, B, C, D, e five towns have carried out skills-based village construction activities
The following arrangements shall be made for a certain period of time: (1) the activity shall only be carried out by the A or B townships if both the C and D townships are carrying out the activity; (2) if the C townships carry out the activity, the activity must be carried out in both A and E townships; (3) if the activity is carried out in E townships, the activity is not carried out in A townships;  (4) the activity is not carried out in E townships
The activity was carried out in township A and not in township B.