Determine the ambiguity in the following sentence: "John and Jim are brothers I can't stand."

The ambiguity in the sentence is whether the speaker can't stand both John and Jim because they are brothers, or if the speaker can't stand John and Jim separately.

The ambiguity in this sentence lies in the interpretation of the phrase "I can't stand." It can be interpreted either as a positive or negative statement, leading to two potential meanings:

1. Positive interpretation: "John and Jim are brothers who I really like."
2. Negative interpretation: "John and Jim are brothers who I dislike immensely."