In this task, you're given a sentence and your task is to generate a simplified sentence that focuses on lexical paraphrasing from the original sentence given in the input.

Input: Consider Input: cogeneration -lrb- also combined heat and power , chp -rrb- is the use of a heat engine or a power station to simultaneously generate both electricity and useful heat.

Output: cogeneration is a combination of heart and power to simultaneously generate both electricity and useful heat.

Input: Consider Input: it has a black bill , crimson eyes , and a call reminiscent of a dog 's bark.

Output: it has a black bill , crimson eyes , and a call like a dog 's bark.

Input: Consider Input: the direct evidence suggests there was a migration of h. erectus out of africa , then a further speciation of h. sapiens from h. erectus in africa.
Output: 1 . the direct physical facts suggest there was a migration of h. erectus out of africa , then a further speciation of h. sapiens from h. erectus in africa.