Classification (container–content): Three pairs show a container and what it contains; one pair is merely an associated duo from a sport. Identify the odd pair.

Introduction / Context:
Association problems often rely on spotting container→content relations. Three options clearly denote vessels and their contents; one is an associated pair from games/sports and not a container→content relationship. The task is to select the association that differs in type.

Given Data / Assumptions:

• Cup → tea (container and beverage).
• Bottle → wine (container and beverage).
• Pitcher → water (container and liquid).
• Ball ↔ bat (complementary sports equipment, no containment).

Concept / Approach:
Classify each as “vessel holds liquid” vs “associated tools.” The non-container pair is the odd one out.

Step-by-Step Solution:

Verification / Alternative check:
Attempt phrasing “X contains Y.” It works for cup, bottle, pitcher; it fails for ball and bat.

Why Other Options Are Wrong:

Common Pitfalls:
Accepting any co-occurrence (e.g., equipment used together) as equivalent to containment. Relation type must match.

Final Answer:
Ball : Bat