In each question below, some statements are given followed by two conclusions numbered I and II. You have to take the given statements to be true even if they seem to be at variance with commonly known facts. Read all the conclusions and then decide which of the given conclusion logically follows from the given statements, disregarding commonly known facts. Give answer-

Statements:
Only a few Tube is Well.
All Well is Pipe.
Some Well is not Tank.
Conclusions:
I. All Tube being Tank is a possibility.
II. All Pipe being Tank is a possibility.

The correct answer is If only conclusion I follows.

To determine which conclusion logically follows, let us analyze the given statements step-by-step:
1. "Only a few Tube is Well": This statement contains two parts:
- Some Tube is Well.
- Some Tube is not Well.
2. "All Well is Pipe": This means the entire category of "Well" is completely contained within "Pipe".
3. "Some Well is not Tank": This indicates there is a specific part of "Well" that can never overlap with "Tank".

Now, let us evaluate the conclusions based on these statements:

Conclusion I: All Tube being Tank is a possibility.
- There is no direct negative restriction between "Tube" and "Tank".
- The only constraint on "Tank" is that some part of "Well" cannot be "Tank". Even if all "Tubes" are placed inside "Tank", the portion of "Well" that is not "Tank" can simply exist outside the "Tube" area.
- Since this scenario does not violate any of the given statements, the possibility is true.
Therefore, Conclusion I follows.

Conclusion II: All Pipe being Tank is a possibility.
- We know that "All Well is Pipe" and "Some Well is not Tank".
- Since all Wells are part of Pipe, the specific portion of "Well" that is not "Tank" is also a part of "Pipe". This means there is always a part of "Pipe" that cannot be "Tank".
- Consequently, it is impossible for all Pipes to be Tanks.
Therefore, Conclusion II does not follow.

Since only conclusion I follows, the correct option is "If only conclusion I follows".