Identify the segment in the sentence which contains the grammatical error. If there is no error, select 'No error'

In about two weeks our holidays will start.

Statements:

Some doors are windows.

All windows are beds.

Some beds are pillows.

All pillows are blankets.

Statements:

Some tasks are work.

All work are job.

Some job are tough

Conclusion:

I. Some tasks are tough.

Statements : All glasses are cups

No cups are spoons.

Some spoons are forks.

Conclusions : I. Some forks are cups.

Statements:

Some couliflower are cabbage.

Some cabbage are asparagus.

Some asparagus are pumpkin.

Conclusions:

Statements:

Only Market are Share.

Some Markets are Stocks.

Only a few Fund is Stock.

Conclusions:

Statement

Only a few A is B

No B is C

Some C is D

Conclusion

I)  All A can never be C

Statements:No town is a city.

All cities are islands.

Conclusions:I. No island is a town.  

II. All islands are cities.

Statement: 

All teachers are student.

Only a few teachers are police.

Some students are doctor.

Conclusion:

All desks may be tables. Some stools are not chairs. Some tables may not be chairs.