Define a function below, filter_only_strs, which takes a single argument of type list. Complete the function so that it returns a list that contains only the strings from the original list and no other data. It is acceptable to return an empty list if there are no strings in the original list.

Write a program that defines symbolic names for several string literals (chars between quotes). * use each symbolic name in a variable definition. * use of symbolic to compose the assembly code instruction set can perform vara = (vara - varb) + (varc - vard); ensure that variable is in unsigned integer data type. * you should also further enhance your symbolic logic block to to perform expression by introducing addition substitution rule. vara = (vara+varb) - (varc+vard). required: debug the disassembly code and note down the address and memory information.