Explanation:

- The problem involves finding a pattern that relates pairs of numbers.

- Starting with the pairs 139:228, there's an addition of 89. (139 + 89 = 228)

- Similarly, for the second pair 122:211, the addition is once again 89. (122 + 89 = 211)

- The final sequence involves determining the number related to 2, similar to previous patterns.

- Applying the pattern, you add 89 to 2. (2 + 89 = 91)

- Therefore, the number related to 2 is 91.

Based on these operations:

- Option 1: 89 is the difference, which relates directly in the pattern.

- Option 2: 91 ?? This is the relevant answer based on previous operations.

- Option 3: 189 and Option 4: 198 do not fit the determined pattern.