List out the ideas discussed in the following sentence and then classify the ideas as one of the four classes whose definition is given as per instructions.
Instruction for classifying:
The ideas shall be a word or continuous set of words occurring only in the sentence.
All words shall be classified to one class.
A word in the sentence shall not be present as part of more than one class.
Class 1 - object: ideas that can be attributed to a physical form.
Class 2 - concepts: ideas that are abstract and cannot be attributed a physical form.
Class 3 - activity: ideas that involves an activity or process.
Class 4 - event: ideas that corresponds to an event.
Sentence: "Physical stores allow to receive assistance with customer’s purchase." Generate output in a table with two columns: ideas - class. Identify the "subject of the above sentence". Give its output in the format, "<subject: identified_subject>". Use words with all capital letters to highlight key points, but make sure that words with all capital letters appear less than 15 times
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