﻿* 
* You have entered plural noun "reptiles", which was unknown to me.
* 
* My assumptions:
< Crocodiles are probably vertebrate [plural of 'vertebrate' is unknown].
< Crocodiles are possibly animal [plural of 'animal' is unknown].
< Crocodiles are maybe organism [plural of 'organism' is unknown].
< 
* 
* My assumptions:
< A mammal is probably an organism.
< A vertebrate is possibly an organism.
< 
* 
* My conclusions:
< John is a mammal.
< John is a vertebrate.
< John is not an amphibian, not a bird, not a fish and not a reptile.
* 
* My assumptions:
< John is probably an organism.
< John is probably not an animal, not a fungus, not a micro-organism and not a plant.
< 
* 
* My assumptions:
< A vertebrate is possibly an organism. Because:
<	- Every vertebrate is an amphibian, a bird, a fish, a mammal or a reptile.
<	- A mammal is probably an organism.
< 
* 
* My assumptions:
< A mammal is probably an organism. Because:
<	- Every organism is an animal, a fungus, a human-being, a micro-organism or a plant.
<	- Every mammal is a cetacean, a marsupial, a rodent, a monkey or a human-being.
< 
* 
* My assumptions:
< Crocodiles are probably vertebrates. Because:
<	- Every vertebrate is an amphibian, a bird, a fish, a mammal or a reptile.
<	- Crocodiles are reptiles.
< Crocodiles are possibly animal [plural of 'animal' is unknown]. Because:
<	- Every animal is a vertebrate or an invertebrate.
<	- Crocodiles are probably vertebrates.
< Crocodiles are maybe organism [plural of 'organism' is unknown]. Because:
<	- Every organism is an animal, a fungus, a human-being, a micro-organism or a plant.
<	- Crocodiles are possibly animal [plural of 'animal' is unknown].
< 
* 
* My conclusions:
< John is a mammal. Because:
<	- John is a human-being.
<	- Every human-being is a mammal.
< John is a vertebrate. Because:
<	- John is a human-being.
<	- Every human-being is a vertebrate.
< John is not an amphibian, not a bird, not a fish and not a reptile. Because:
<	- John is a vertebrate.
<	- Every vertebrate is an amphibian, a bird, a fish, a mammal or a reptile.
<	- John is a mammal.
* 
* My assumptions:
< John is probably an organism. Because:
<	- Every organism is an animal, a fungus, a human-being, a micro-organism or a plant.
<	- John is a human-being.
* 	and:
<	- John is a mammal.
<	- A mammal is probably an organism.
< John is probably not an animal, not a fungus, not a micro-organism and not a plant. Because:
<	- John is probably an organism.
<	- Every organism is an animal, a fungus, a human-being, a micro-organism or a plant.
<	- John is a human-being.
< 
