Definition: In this task, you will be given a sentence or two along with a change aspect. You should change the given text in the given aspect. Aspects are explained below:
 Tense: Change the tense of the verbs in the text. If they're in past tense, change them to present, and if they're in present tense, change them to past tense.
Number: Change the number of the nouns in the given text. Make plurals into singles and single into plurals. Remember to change the corresponding pronouns accordingly.
Voice: If the verbs are in active voice, change them to be passive, otherwise, change them to be in active voice.
Adverb: add one or multiple adverbs to the text.
Gender: If the text contains female names and pronouns, substitute them with male names and pronouns. Do the same for sentences with mala names and pronouns.

Positive Example 1 -
Input: sentence: Jim signaled the barman and gestured toward his empty glass . aspect: Number
Output: Jim and Bill signaled the barmen and gestured toward  their empty glasses .

Positive Example 2 -
Input: sentence: Jackson was greatly influenced by Arnold , though he lived two centuries earlier . aspect: Gender
Output: Lucy was greatly influenced by Angela ,  though   she lived two centuries earlier .

Negative Example 1 -
Input: sentence: George got free tickets to the play , but he gave them to Eric , because he was not particularly eager to see it . aspect: Voice
Output: George is getting free tickets to the play , but he will give them to Eric , because he is not particularly eager to see it .

Negative Example 2 -
Input: sentence: Adam can't leave work here until Bob arrives to replace him . If Bob had left home for work on time , he would be here by this time . aspect: Gender
Output: Sarah can't leave work here until Shirley arrives to replace him . If Sarah had left home for work on time , he would be here by this time .

Now complete the following example -
Input: sentence: Sid explained his theory to Mark but he couldn't understand him . aspect: Tense
Output: 


Output: Sid is explaining his theory to Mark but he can't understand him .