Select the option in which the words do NOT share the same relationship as that shared by the given group of words.
Patient : Surgeon : Surgery

Given: Patient : Surgeon : Surgery

Logic: The second term indicates the occupation, the third term specifies the function performed within that occupation, while the first term denotes whom or what the function is directed towards.

Patient : Surgeon : Surgery$$\rightarrow$$​The Surgeon does the surgery on patients.

Let's check the options -

First option: Chalk : Teacher : Students$$\rightarrow$$This sequence does not follow the pattern because the student is not an occupation.

Second option: Cloth : Tailor : Stitch$$\rightarrow$$Tailor stitches the clothes, so, this sequence follows the pattern.

Third option: Vegetables : Chef : Cook$$\rightarrow$$Chef cooks the vegetables, so, this sequence follows the pattern.

Fourth option: Clay : Potter : Pottery$$\rightarrow$$Potter does pottery with clay, so, this sequence follows the pattern.

So, only the first option does not follow the pattern.

Thus, the correct answer is (a).