Which one among the following substances does not contribute to global warming?

Statements:

Only a few balloons are cakes.

All cakes are knife.

Some knife are ribbons.

Statements: Only boys are girls.

Some boys are men.

No man is a woman.

Conclusions: I. All boys are girls.

Statements:

Only a few subject is colour

Only few colour is game

Only game is mobile

Conclusions:

Statements : All dens are cattle.

  Some cattle are cows.

No cow is a horse.

Conclusions:I. All dens are not horses.

Statement:

Mostly P are Q.

P few Q are R.

All R are S.

No S is T.

Conclusion :

1. Only S are R.

Statements: Some pins are mirrors.  

All mirrors are boxes.

Conclusions:I. Some boxes are pins. 

 II. Some boxes are mirrors.

Statement :  Some biscuits are cakes.

                              All cakes are flours.

Statements:

All banks are hospitals.

Only hospital is station.

No school is a bank.

Conclusions:

Statements:                      

Some roses are sunflowers.

Some sunflowers are lotus.

Statement :  Some letters are alphabets.

                               All alphabets are words.