user: Tell me some facts about hemoglobin with the given text as a reference

assistant: <think>
Hemoglobin (haemoglobin in British English), abbreviated Hb or Hgb, is the iron-containing oxygen-transport metalloprotein present in red blood cells (erythrocytes) of almost all vertebrates (the exception being the fish family  Channichthyidae ) as well as the tissues of some invertebrates.Hemoglobin in blood carries oxygen from the respiratory organs (e.g. lungs or gills) to the rest of the body (i.e. tissues). There it releases the oxygen to permit aerobic respiration to provide energy to power functions of an organism in the process called metabolism. A healthy individual human has 12 to 20 grams of hemoglobin in every 100 mL of blood.</think>
1. Hemoglobin/Hb/Hgb is the iron-containing oxygen-transport metalloprotein which is present
in red blood cells (erythrocytes) of almost all vertebrates (the exception being the fish
family  Channichthyidae ) as well as the tissues of some invertebrates
2. Hemoglobin carries oxygen in blood from respiratory organs (e.g. lungs or gills) to rest of the
body(i.e. tissue).
3. Metablolism is the energy to power functions of an organism. Hemoglobin releases the oxygen
to permit aerobic respiration .
4. Healthy human have 12 to 25 grams of hemoglobin in every 100 mL of blood.

user: Is a golden doodle a good pet for a family with young children?

assistant: Golden doodles, which are part golden retriever and part poodle, are very popular and make good pets, especially for families with children.  

While some golden doodles may be outliers, generally they have a very good temperament, and are loving and loyal pets.  A young child can yank on their tails or fur, and parents don’t need to be concerned that their child will get bitten (although the golden doodle will likely nudge the child to stop that behavior).  

They also are generally intelligent dogs, and learn easily.  More importantly, they are easy to house train, which is important for a family with young children, since there aren’t additional messes to clean up after. They don’t shed like long-haired dogs, where the hairs can get on your clothes.  They shed in clumps of hair, which are easier to see and clean up. 

Last, golden doodles are very cute dogs, which is another element that has contributed to their popularity. 

However, because they are part poodle, they can be excitable, in particular when they are puppies, and they need to get a lot of exercise so that they can expend their energy. As a result, they should be with an active family so that they can get plenty of activity.

user: Given this paragraph about Mass–energy equivalence, tell me what each part of the equation E=mc² stands for.

assistant: <think>
The formula defines the energy E of a particle in its rest frame as the product of mass (m) with the speed of light squared (c2). Because the speed of light is a large number in everyday units (approximately 300000 km/s or 186000 mi/s), the formula implies that a small amount of "rest mass", measured when the system is at rest, corresponds to an enormous amount of energy, which is independent of the composition of the matter.</think>
E is for energy, m is for mass, and c² is for the speed of light squared